Dissertations / Theses on the topic 'Alpacas - Enfermedades por virus'
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Brenneisen, Lavado Walter Arturo. "Procesos neumónicos en crías de alpaca: conceptos sobre los agentes y las enfermedades." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/12348.
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Recopila información reciente sobre los conceptos más importantes de los procesos neumónicos en crías de alpacas. Bajo la denominación de Camélidos Sudamericanos (CSA), se engloba a dos especies domésticas: la alpaca y la llama, y a dos silvestres: la vicuña y el guanaco. La neumonía, junto con la diarrea, es una de las mayores causas de mortalidad en los animales neonatos. En los CSA y en las alpacas en particular, se ha realizado pocos estudios epidemiológicos sobre los procesos neumónicos y la etiología de los mismos y los pocos datos sobre la participación de los distintos agentes infecciosos causales de estos procesos proceden de estudios de seroprevalencia.
Trabajo de suficiencia profesional
Sánchez, Salazar Manuel Rodolfo. "Permisibilidad de cultivos celulares secundarios de alpaca y llama a multiplicación viral de herpesvirus bovino, virus de la diarrea viral bovina, virus parainfluenza 3 bovina y virus respiratorio sincitial bovino." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/705.
Full text--- In order to determine the permisibility of alpaca and llama cell cultures to infection by various viral agents of known seroprevalence, nasal turbinate and skin cell lines of alpaca and llama were established and infected with Bovine Viral Diarrhoea Virus (BVDV), Bovine Herpes Virus type 1 (BHV-1), Bovine respiratory Sincitial Virus (BRSV) and Bovine Parainfluenza Virus type 3 (BPIV-3). Presentation of citopathogenic effect (CPE) was determined and characterized by optical microscopy of Hematoxilin-Eosine stained monolayers. The presence of viral antigen was confirmed by Direct Immunofluorescence. Every cell line was permisible to infection with the four viral strains, showing the characteristic CPE. These results prove that alpaca and llama cells cultured in vitro show homologue receptors to those found in bovine cells and determine that these type of cultured cells repesent an appropriate model for viral infection assays. Key Words: alpaca, llama, cell lines, permisibility, Bovine Viral Diarrhoea Virus (BVDV), Bovine Herpes Virus type 1 (BHV-1), Bovine respiratory Sincitial Virus (BRSV) and Bovine Parainfluenza Virus type 3 (BPIV-3), Citopathogenic effect (CPE).
Tesis
Victorio, Cisneros Willy Mayk. "Seroprevalencia de los virus neumopatógenos de la Parainfluenza bovina 3 (VPI3), Herpesvirus bovino 1 (HVB1) y Virus respiratorio sincitial bovino (VRSB) en alpacas adultas de la provincia de Canchis - Cusco." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/2271.
Full textThe objective of the present study was determine the presence of respiratory virus. Three hundred forty five serum samples from thirty one farms were tested by virus neutralization test to detect neutralizing antibodies against PI-3, BHV1 and BRSV. The farms were small farms from the province of Canchis - Cusco. All the samples were worked by means of the test of viral neutralization using secondary cellular cultures of bovine origin and cytopathic virus from the laboratory. Thirty one farms had seroreactive animals to BRSV and PI-3; and one farm had seroreactive animals to BHV1. The 80,16% ± 6,96% (101/126) and 67,54% ± 4,94% (233/345) of the samples had antibodies against BRSV and PI-3 respectively. These results suggest that sample animals have been exposed potentially to respiratory virus, and demonstrate an active viral replication at the time of the sampling that agreed with a severe low temperature in the zone and mortality of animals by pneumonia in the field.
Tesis
Juscamayta, López Julio Eduardo. "Clonación y expresión heteróloga de un potencial candidato vacunal contra neumonía en alpacas usando el enfoque pan-genómico de la vacunología reversa." Master's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/5823.
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Guzmán, Masias Karol Patricia. "Identificación de polimorfismos del gen tlr4 en crías de alpacas con cuadros de neumonías por Pasteurella multocida." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/1529.
Full text--- Pneumonias are the second leading cause of mortality of babies’ alpacas; this is caused by viral and bacterial agents that coexist in infectious processes causing acute pneumonia. Pasteurella multocida is the main bacteria involved in pneumonia infections in alpacas, followed by Mannhemia haemolytica, both agents in hyperacute cases generate death of offspring during calving season and stressful times. However this association has the participation of differences virus likes BRSV. Toll-like receptors (TLR) are transmembrane proteins found in various cell types. The genes encoding this protein are highly conserved across different species. The protein TLR4 recognizes LPS, a structure which have all gram-negative bacteria (Pasteurella multocida and Mannhemia haemolytica) and the F protein of BRSV. In alpacas has not identified the presence of this gene, so that the study primers were designed to identify the presence of the gene in this species. We had obtained the sequence of the gene in alpacas allowed analyzing and comparing the sequences obtained between individuals and between species, noting the high degree of conservation of TLR4gene sequence between species. We could not to detect polymorphisms sort of SNP between sick and healthy animals, but we were able to determine SNP genotypes in individuals showing GT and GC. Key Words: alpacas, pneumonia, Pasteurella multocida, Mannhemia haemolytica, BRSV, tlr4, polymorphism.
Tesis
Briceño, Aliaga Mónica Cristina. "Contribución de una intervención educativa con madres del distrito de Ventanilla para el control de las infecciones virales en el hogar, noviembre 2008 - marzo 2009." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/2087.
Full text--- Viral infections are the main cause of acute respiratory infections; in the majority of cases they only require general measurements for treatment. Objective: make on an educational intervention with mothers in order to control the mild viral infections at home. Methods: Qualitative research, actions with mothers from November 2008 to March 2009 The study had a diagnostic phase of breaches in the management of viral infections through an ethnographic study, ethnological and observation of attitudes. One phase of intervention using participation methodology and a phase of evaluation. Results: They presented in the observation characteristics with predominance of anxiety. In the ethnological study, lack of knowledge of the virus as a causal agent; they believe that cold symptoms are treated with antibiotics; it is prevalent in their minds not to know what to do and despair. In the ethnographic study, there was predominance of housing in human settlements, located more than 30 minutes from the policlinics, surrounded by land, wood constructions’, without water and drainage system. The main family type was the nuclear type. They learned about viral infections, the symptomatic management at home; change of attitude while saying “they feel calmer”, “to follow step by step and “to know they can apply what they learned. Conclusion: An educational intervention applying a participation methodology, considering concepts, procedures and changes in attitude get the mothers management at home viral infections not complicate trusting its developed capacities.
Tesis de segunda especialidad
Pérez, Janampa David Remy. "Genotipificación y subtipificación de Clostridium perfringens aislados de crías de alpacas muertas por enterotoxemia." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/665.
Full text--- Enterotoxemia, caused by the Clostridium perfringens, is the most important infectious disease which affects alpacas, causing up to 70% neonatal mortality. In spite of this, little information exists on the virulence factors (toxins) of C. perfringens which play an important role in the etiopathogenesis of the disease. The objective of the present study was to determine the genotype of C. perfringens isolated from cases of enterotoxemia based on the presence of genes (cpa, cpb, etx and iap) which encode the main toxins (α, β, ε and ι), as well as the subtypes based on the presence of genes cpe and cpb2 which encode the enterotoxin (CPE) and β2-toxin respectively. A total of 47 isolations of C. perfringens were obtained from the small intestine of neonatal alpaca mortalities which had both clinical signs and gross and histological injuries typical of enterotoxemia. The DNA was extracted from these isolates and analyzed by PCR Multiplex using specific primers for the toxin genes. The cpa gene genotype A subtype cpe-cpb2-) was the only gene found in 70.2% (33/47) of the isolations. In 27.7% (13/47) of the cases the cpa and cpb2 (genotype A subtype cpe-cpb2+) genes were found and in 2.1% (1/47) the cpa, cpb and cpe (genotype C subtype cpe+cpb2-) genes were present. These results demonstrate the primary role of α-toxin, as well as the presence of β2 and β-toxins in the etiopathogenesis of enterotoxemia in alpacas. Key Words: Clostridium perfringens, genotypification, enterotoxemia, alpacas.
Tesis
Castro, Sanguinetti Gina Ruth. "Estandarización de la técnica RT-PCR a tiempo real para la detección del virus de la necrosis pancreática infecciosa (IPNV) en la trucha arco iris (Oncorhynchus mykiss)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/692.
Full text--- This study aimed to standardize and validate the real-time RT-PCR technique for diagnosis of Infectious Pancreatic Necrosis Virus (IPNV) in rainbow trout (Oncorhynchus mykiss) in Peru. Kidney and spleen samples of rainbow trout (n=121) from two fish farms of Junin were taken, 61 animals showed signs of disease and 60 were apparently healthy animals. All samples were assessed by indirect immunofluorescence technique (IIF) to determine presence of virus. Real-time RT-PCR was carried out using a two-step commercial kit. We used WB1 and WB2 primers for amplification of a specific genomic segment of the VP2 structural protein. IPNV Sp strain and 10 samples inoculated with IPNV were used as positive controls; whereas related viruses, such as rotavirus and infectious bursal disease virus from chickens, as well as unrelated viruses were all used as negative controls. Also, we inoculated decreasing dilutions of virus into tissue samples to determine the sensitivity degree of the test. Results were assesssed according to the values of the threshold cycle (Ct) and melting temperature (Tm) of the amplified products. The test was able to detect the virus in concentrations up to 102 PFU/ml. All 121 field samples were negative for IPNV; sick animals were apparently infected by bacterial agents. Real Time RT-PCR’s specificity and sensitivity were around 100%; moreover, the positive predictive value and negative predictive value was also set in 100%. Real time RT- PCR technique standardized in our laboratory is a valuable diagnostic tool for IPNV detection in field samples. Key Words: Infectious Pancreatic Necrosis Virus, IPNV, RT-PCR, real time RT-PCR
Tesis
Góngora, Aybar Vladimir Ebner. "Evidencia serológica de la presencia del virus herpes canino en la provincia de Lima." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2005. https://hdl.handle.net/20.500.12672/663.
Full text--- The canine Herpesvirus type 1 (CHV-1) is responsible for the canine hemorrhagic disease in puppies aged less than four weeks and for any reproductive problems in adult bitches. In Peru, this disease has been not reported, althoug there is findings suggesting its presence. Thus, the aim of this study was to show the presence of antibodies against CHV-1 among the canine population associated with antecedents to reproductive problems in the province of Lima. Blood serum samples coming from 28 animals belonging to 7 districts of the province of Lima were collected. These samples that have been related to any reproductive problems antecedent and/or neonatal mortality were submited to the indirect inmunofluorescens test (IFAT). From the total samples, 9 of them (32 ± 17%) turned out to be positive to the test, besides 5/9 (56%) were male and 4/9 (44%) were female. According to the district, 5/7 (71%) of them had some positive animal which were aged 8 months to 10 years.
Tesis
Maximiliano, Guerra Jorge Enrique. "Falla de transferencia pasiva de inmunoglobulina G y su asociación con mortalidad por enterotoxemia en alpacas neonatas." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/6833.
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Suica, Loyola Erika Carolina. "Detección de anticuerpos contra Chlamydophila felis en felinos domésticos pacientes de la Clínica de Animales Menores de la Facultad de Medicina Veterinaria-UNMSM." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/1553.
Full textThe present study had for object to determine the presence of antibodies against Chlamydophila felis, causing of the conjunctivitis in domestic cats. The samples were taken from 60 domestic felines of different ages, sex, races, clinical antecedents and districts of Lima that were taken to the Clinic of Small Animals of Veterinary Medicine School of the Universidad Nacional Mayor de San Marcos. Therefore, blood samples were randomly collected for the detection of antibodies by means of Indirect Inmunofluorescence Assay. Seven felines were positive, they represented 11.7 + 6.9% (I.C. 95%). This shows that the bacteria is present in the population of cats of the Lima. There was not significant statistical association (p>0.05) among the presence of antibodies with the sex, age and race of the animals, however, there was a significant association (p <0.05) among the presence of these antibodies with animals that had access to the street. It is reported the presence of Chlamydophila felis in domestic felines in Lima evaluating patients of the Clinic of Small Animals of Veterinary Medicine School.
Tesis
León, Rodríguez Natalia. "Evaluación de los niveles de protección de una vacuna intermedia contra la enfermedad de Gumboro en pollos de postura." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/2631.
Full text-- This study evaluated the protection conferred by a vaccine against Gumboro disease in laying hens. Were used 300 laying hens distributed in three groups of 100 hens each one, group A was vaccinated and unchallenged, group B was vaccinated and challenged and group C was challenged but not vaccinated.
Tesis
Rondón, Espinoza Juan Alexander. "Vigilancia dirigida de influenza aviar en aves silvestres de los humedales de Puerto Viejo usando patos domésticos (Cairina moschata) como centinelas." Master's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/3377.
Full text--- We applied a targeted surveillance method for early detection of Avian Influenza Virus (AIV) in wild birds in the Wetlands of Puerto Viejo, Province of Cañete in Lima - Peru. As sentinel domestic ducks were used 12 to 16 weeks of age, variety Muscovy (Cairina moschata), and negative by serology and virus isolation, which were introduced to areas surrounding wetlands for a period of 70 days during the winter of 2006, to interact with resident wild birds. We conducted a preliminary identification of species of wild birds present during the study and was determined subjectively the degree of interaction between the two bird populations. We assessed the health status of the sentinel birds through regular clinical examinations, cloacal swab samples and blood for both virus isolation for detection of antibodies against VIA by the AGID test. Throughout the study was not detected or isolated antibodies VIA. The negative results of evaluations performed under the conditions and time of the study suggest the absence of VIA and horizontal transmission by wild birds in wetlands of Puerto Viejo. Key words: Avian Influenza, targeted surveillance, wetlands, wild birds, sentinels birds, interaction, horizontal transmission.
Tesis
Jove, Martel Ana Luisa. "Evaluación de las cepas H120 y M48 en programas de vacunación contra bronquitis infecciosa aviar en pollos de carne." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/2266.
Full textThe objective of this study was to determinate the protection level given by two commercial live of Infectious Bronchitis vaccines (strains M48 and H120) against experimental challenge with M41 strain, in four groups of chicks (Ross 308) with different vaccination programs G1 (M48), G2 (H120), G3 (M48/H120), G4 (H120/M48) and a control group G5 (without vaccination). Protection was measure through clinical signs, antibody levels, ciliary activity, histopathology and productive parameters after experimental challenge. Revaccinated groups were better protected against the onset of clinical signs, although they showed a diminished ciliary activity (first-thirth day after challenge) and microscopic damage (histologicaly change from minimal to moderate). We found that group G4 had a very effective protection level. fewer amount of respiratory signs (snores) and minimal to moderate microscopic tracheal damage They also recovered ciliary activity. This group had the best average body weight at the end of the experiment, they obtened 286 g body weight and 15 point of Index of Productive Efficiency more than G5. In the groups that were vaccinated only once, we saw Less protection levels, also more respiratory signs and microscopic lesions, less average weight and productive parameters statistically significant, (P<0,05). Furthermore, G5 showed a severe reaction after challenge, diminishing its productive parameters. The absence or presence of clinical signs or respiratory lesions after challenge against to BIA was not correlated to antibody titers in chicks. We think that under field conditions, vaccination with H120/M48 program would give a wide protection against IBV infections.
Tesis
Falcón, Cáceres Luis Enrique. "Agentes virales como causa de ira baja en niños menores de 1 año hospitalizados en el HEP. Estudio clínico – epidemiológico. Año 2001 - 2002." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2003. https://hdl.handle.net/20.500.12672/1947.
Full textTesis de segunda especialidad
Huapaya, Valcárcel Maristella Rosa Luz. "Prevalencia de anticuerpos contra Metapneumovirus aviar en pavos de traspatio en las provincias de Lima, Huaral, Huaura y Barranca." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/12198.
Full textDemuestra la presencia de anticuerpos contra MPV en 395 pavos de traspatio de diferente edad y sexo procedente de las provincias de Lima, Huaral, Huaura y Barranca; las muestras fueron colectados durante los meses de diciembre 2008 a julio 2009 y analizadas con la prueba de inmunoensayo de enzimas asociadas (ELISA indirecto). Se detectaron anticuerpos en 122 de 395 muestras correspondientes a las provincias de Lima (74/ 237), Huaral (10/83), Huaura (18/55) y Barranca (20/20), haciendo una prevalencia total de 30.89% y una prevalencia corregida de 31.85% + 4.59%. La mayor prevalencia fue encontrada en la provincia de Barranca (100%), seguida por las provincias de Huaura y Lima (32.73% y 31.22%, respectivamente) y finalmente la prevalencia más baja fue encontrada en Huaral con 12.05%. Los resultados del presente estudio demuestran que los pavos de traspatio son un reservorio importante del aMPV y tienen un rol en la epidemiología de la enfermedad en el país, recomendándose realizar monitoreos a nivel nacional, con mayor énfasis hacia la costa norte del país, incluyendo aves silvestres y comerciales; así como la identificación y serotipificación de las cepas del aMPV presentes en el país.
Tesis
Vejarano, Ruibal María del Pilar. "Evaluación de los parametros productivos de pollos de carne criados sobre cama reusada por cinco campañas vs. cama nueva." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2005. https://hdl.handle.net/20.500.12672/712.
Full text--- The reuse of litter is a common practice in poultry raising due to monetary reasons. The aim of this study was to evaluate the performance and sanitary status of broilers raised in new litter and reused litter. 250 male broilers from the Ross 308 line were raised as follows: 125 in new and 125 in reused litter during 5 flocks. Performance data was collected weekly, as well as ammonia levels, oocysts count per gram of litter, and count of coliformis bacteria, fungi and mesofilic bacteria CFU per gram of litter in both groups. The levels of antibodies against Infectious Bronchitis (BV), Newcastle Disease (ND) Infectious Bursal Disease (IB) Chicken Anemia Virus (CAV) and Avian Reoviruses were evaluated by ELISA test at the beginning and ending of the flock (day 49). The broilers raised in new litter obtained a feed conversion of 2.07 and an average body weight of 3.2±0.07kg, against 2.09 feed conversion and 3.87±0.06kg body weight found in the second group. At the end of the study there was no statistic difference (P is less than 0.05) between the performance parameters for both groups. The ammonia levels and oocyst count were higher during the first weeks in the reused litter group, nevertheless, there was no statistic difference. The CFU count for mesofilic bacteria was higher in the new litter group, being statistically significant. The serology results didn’t show any seroconversion to the virus tested. Upon this, it will be expected that the litter coming from poultry farms without a history of infectious problems and with an adequate handling of environmental conditions of the farm can be safely reused for up to 5 flocks.
Tesis
Sialer, García María Mercedes. "Evaluación de la eficacia de una vacuna vectorizada para el control de Newcastle aplicada en pollos bb en planta." Master's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/11757.
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Caballero, Romero Fabiola. "Evaluación experimental de la patogenicidad de un virus velogénico viscerotrópico de la enfermedad de Newcastle y su respuesta inmune humoral en aves columbiformes." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2003. https://hdl.handle.net/20.500.12672/846.
Full text-- This study was designed to asses the susceptibility, pathologic effect and serologic response of wild pigeons (sp. Columba livia) to Newcastle virus. A total of twenty eight adult wild pigeons were captured, fourteen were inoculated with a velogenic viscerotropic strain of Newcastle virus by oral and nasal route. The remaining pigeons were used as control group. The birds were observed to record clinical signs and mortality, also blood samples were collected for hemaglutination inhibition technique and tissue samples from lungs, tracheas and cloacal swabs were harvested for the viral recovery and histological studies. The 64 % of the inoculated group showed clinical signs and a mortality of 42.8 %. The clinical signs (sneezes, ruffled plumage, isolation and lethargy) started the fourth day post inoculation. The 43 % showed nervous signs: opisthotonos, tremors of head and neck that was exaggerated to the stimulus of noises and the 21 % showed diarrhea. In the necropsy were observed a widespread congestion and splenomegaly. The microscopic injuries were edema, gliosis, mononuclear perivascular cuffing in brain and cerebellum, loss ciliar, lymphoid infiltration in trachea, lungs congestion, proventricular congestion, and lymphocitic infiltration in intestines and lymphoid depletion in spleen. The inoculated group showed an increase in the antibody titers the first week post inoculation reaching the highest titer mean (P.G.T=4.9) in the second week after this they descended. The viral recovery was made upon lungs and tracheas tissues and from a cloacal swab in dead birds. It was showed that the specie Columba livia was susceptible to the experimental inoculation with a velogenic strain of Newcastle diasease virus.
Tesis
Paredes, Vásquez Walter Mitchell. "Evaluación de la protección conferida por un programa de vacunación contra la enfermedad de Gumboro en pollos de carne aplicando la fórmula Deventer." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/729.
Full text--- The present study evaluated the conferred protection by a program of vaccination to the age determined by the Deventer formula against a challenge with a standard strain of the Infectious Bursal Disease virus (IBDV) in broiler chickens. There were three experimental groups. The group A was vaccinated at 10 days old with a Lukert strain (intermediate-mild) and 18 days with CE strain (intermediate-intermediate); group B vaccinated at 21 days old (according to the Deventer formula) with the 228TC strain (intermediate-intermediate) and group C were not vaccinated (control). At 35 days old 45 birds of each group were challenged with a standard strain F 52/70 of the IBDV. The protection was measured through clinical signs, bursal index (B.I.), gross and microscopic lesions, serology and productive parameters after challenge. All the groups presented clinical signs and bursal oedema until 10 days post challenge. The values of I.B. in the three groups were compatible with bursal atrophy and the histopathology lesions were severe in the vaccinated groups. Seroconversion was not observed until the end of the study and productive parameters of the vaccinated groups were similar (po0.05). The obtained results indicated that no one of the experimental groups was protected of the clinical disease until the 10 days post challenge; nevertheless productive parameters in the vaccinated groups were not affected by challenge. The best protection was observed in the group A in comparison group B nevertheless was not observed significant statistical difference (po0.05).Key Words: Infectious bursal disease virus (IBDV) , vaccination, Deventer formula, protection.
Tesis
Vidal, Alzamora Karina del Rosário. "Evaluación de dos vacunas comerciales contra al [i.e. la] infección bursal conteniendo el complejo antígeno anticuerpo en pollos de carne." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/752.
Full text--- The present study evaluated the conferred protection by two imnune complex (Icx) vaccines contained a 2512 strain of Infectious Bursal Disease Virus (IBDV) linked to a virus specific antibodies of vaccination at the one day old by subcutaneous route in broilers chickens. There were four experimental groups. The group A and B were vaccinated at one day old with two comercial Icx vaccines; group C was vaccinate with traditional program of vaccination with intermediate vaccines at 10 and 18 days old age and group D (control) without vaccination. At 35 days old 45 birds of each group were challenged with a standard strain F 52/70 of the IBDV. At 4, 7 and 10 days post challenge 15 birds of each challenge group was euthanazied for parameters evaluation. The protection was measured through clinical signs, bursal index (B.I.), gross and microscopic lesions, serology and productive parameters after challenge. All the groups presented clinical signs, they were severe and mild in control group and group A respectively. The bursal oedema was observe until 10 days post challenge. The values of I.B. in the four groups were compatible with bursal atrophy and the histopathology lesions were severe in the control group. Seroconversion was observed only in groups with Icx vaccines (A y B) until the end of the study. Productive parameters of the vaccinated groups were better in vaccinates group. Although the obtained results indicated that the vaccinated groups were better protected compared with control group there was not observed significant statistical difference between groups (po0.05). Key Words: Infetious bursal disease virus (IBDV), Immune complex (Icx), subcutaneous route, vaccination, protection.
Tesis
Ravina, Noriega Piero Francesco. "Monitoreo serológico de la enfermedad de Newcastle efectuado en aves domésticas (Gallus gallus) en Ica, Arequipa, Moquegua, Tacna, Junín, Huancavelica, Ayacucho, Cusco, Apurímac y Puno-2001." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2005. https://hdl.handle.net/20.500.12672/1543.
Full textIn the present thesis work has been analyzed 2775 samples of avian serum collected in the serologic screening of Peru done by El Servicio nacional de Sanidad Agraria (Senasa) from August 27 2001 to January 18 2002. The samples were classified according to the type of exploitation in: Layers (n =299) , broilers (n =704), in-house breeding (n =1200) and cock fight breeding (n =492). The analysis of the results was interpreted by the use of a chart of interpretation designed by a panel of experts, which consisted in the standardization of the serologist results of the inhibition of hemoaglutination test (HI), for the Newcastle disease (ND) according to the level of antibody titel obbteined. The result of the analysis of the total of samples analyzed gave a frequency of 4.7% of birds considered positives which presented tittles of antibodies compatibles to a field challenge of the ND virus. The analysis by type of exploitation gave a frequency of 11.71% for the layers and a 3.9% for the in-house breeding. The analysis of multinomial logistic regression shows that the group of layers as a risk factor, associated to the title of antibodies of the HI test compatible to a challenge of the ND virus. The present study concludes that the ND virus is endemic in the layers breeding for the de departments of Ica, Arequipa, Moquegua, Tacna, Junín, Huancavelica, Ayacucho, Cuzco, Apurímac and Puno.
Tesis
Nunura, Reyes Juan Manuel. "Factores de riesgo para la infección por el virus de la hepatitis B en el Centro Médico Naval "CMST"." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2005. https://hdl.handle.net/20.500.12672/1908.
Full textTesis de segunda especialidad
Cruz, Farga Axel. "Estudio de infecciones producidas por reovirus, Circovirus, virus de la enfermedad de newcastle, Virus de la influenza aviar, Mycoplasma Gallisepticum y Mycoplasma sinoviae en aves psitaciformes en cautiverio en Chile central." Tesis, Universidad de Chile, 2006. http://repositorio.uchile.cl/handle/2250/130856.
Full textComo primer intento por conocer el estatus sanitario de las aves psitácidas en cautiverio en Chile, este trabajo buscó establecer la identificación serológica de: a) Infecciones bacterianas producidas por Mycoplasma gallisepticum (MG) y Mycoplasma sinoviae (MS); b) Infecciones virales producidas por Reovirus (Reov), virus de la Influenza Aviar (vIA), virus de la Enfermedad de Newcastle (vENC) y c) La identificación molecular del Circovirus, causante de la Enfermedad del Pico y las Plumas de los Psitácidos (PBFD). Para este efecto se tomaron muestras de suero sanguíneo o sangre entera, de 408 aves jóvenes y adultas, de un total de 1.438 psitácidas repartidas en 7 poblaciones de la Región Metropolitana. De estas aves, se tomaron muestras de suero sanguíneo para la detección de anticuerpo contra: vIA, vENC, Reov, MG y MS. Se tomaron también, muestras de sangre entera de las aves para la identificación molecular de Circovirus. Al momento de la toma de muestras las aves se encontraban clínicamente sanas. Estas aves pertenecían diversas especies nativas de África, Oceanía, Asia y América del sur: 1) importadas legalmente y directamente desde el mismo país de origen de estas aves o desde criaderos de aves en Europa. 2) Nacidas en cautiverio en Chile central. 3) Aves decomisadas a traficantes de aves silvestres o particulares no inscritos en el Servicio Agrícola y Ganadero (SAG). El análisis de estas pruebas serológicas se desarrollaron en el Laboratorio de Patología Aviar de la Facultad de Medicina Veterinaria de la Universidad de Chile, exceptuando el caso de infecciones por Circovirus, las cuales se analizaron mediante identificación del genoma viral por la reacción en cadena de la polimerasa (PCR), en el Laboratorio de Enfermedades Infecciosas de la Escuela de Medicina Veterinaria de la Universidad de Georgia. Los resultados demuestran la existencia de anticuerpos contra MG en 5 de las aves muestreadas (2,5%), MS en 5 de las aves muestreadas (2,5%) y vENC en 26 de las aves muestreadas (13%). Las pruebas para detectar anticuerpos contra vIA y Reov, demostraron la ausencia de anticuerpos en las aves muestreadas. Así también, las pruebas para la identificación molecular de Circovirus, demostraron la ausencia de éste, en las 100 aves muestreadas.
Cárdenas, Pecho Luis Eduardo. "Frecuencia de anticuerpos contra el virus de lengua azul en huanganas (Tayassu pecari) de tres localidades del departamento de Madre de Dios." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2012. https://hdl.handle.net/20.500.12672/15071.
Full textEl Perú es un país megadiverso, posee el 13% de los bosques tropicales amazónicos y su fauna cuenta con más de 462 especies de mamíferos siendo el pecari labiado (Tayassu pecari) o huangana uno de ellos. En la amazonia peruana la fauna silvestre es el segundo más importante recurso alimenticio en aporte de proteína animal a la población humana, tanto la huangana como el sajino son especies silvestres de gran importancia ecológica y comercial sin embargo existen distintos factores que ponen en riesgo la salud de estos mamíferos silvestres. Existen algunos estudios sobre la biología, conducta poblacional, perfiles bioquímicos pero información sobre el aspecto sanitario de estas especies son escasas. El objetivo del presente estudio fue determinar la frecuencia de anticuerpos contra el virus de Lengua Azul (vLA) en huanganas (Tayassu pecari) de vida libre de tres localidades del Departamento de Madre de Dios. Con este fin se evaluaron 106 muestras de suero, conservados en el banco de suero del Laboratorio de Virología de la Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos para determinar anticuerpos contra el vLA mediante la prueba de inmunodifusión en gel de agar. El 29.2% (31/106) de las muestras presentaron anticuerpos contra el virus LA. No hubo asociación (p>0.05) entre las variables seropositividad y los lugares de procedencia de las muestras.
Tesis
Huamán, Torres José Luis Alfredo. "Aislamiento y caracterización de enterovirus en enfermedad tipo influenza en niños menores de 15 años, Piura 2011." Master's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/4250.
Full textEnteroviruses (EVs) are the most common cause of respiratory tract infections in humans and are classified into seven species (EVA-D and rhinovirus [RHV] A-C) with more than 200 different serotypes. Little is known about the role of EVs in respiratory infections in South America. The main objective of this study was to determine the prevalence of EVs in children aged ≤ 15 years with influenza-like illness enrolled in an Influenza and other respiratory viruses’ passive surveillance network in the district of Piura during 2011. Throat swabs and epidemiological data were collected from each participant. Virus isolation was performed by cell culture using four cell lines (LLCMK2, Vero, RD and A549). The identification and serotyping of EV were performed by immunofluorescence assay using monoclonal antibodies. Isolates non-serotypeable by immunofluorescence were selected for analysis by RT-PCR, followed by sequencing. A total of 424 samples were analyzed, and EVs were found in 47 samples (11.1%). 46.8% of these EVs were found in children aged ≤ 1 year. Our results revealed a predominance of EVB species, 62.5%. No EVD isolates were isolated. Fifteen serotypes were identified, 4 EVA, 8 EVB, and 2 EVC species. Moreover, seven samples could not be correctly classified with our methodology. The most common serotypes were coxsackievirus B2, coxsackievirus A2, and echovirus 9. The use of cells RD and A549 increase the isolation of EVs. This study provides data about the serotypes of EVs circulating in the district of Piura and sets the need for further studies. Keywords: Enterovirus, respiratory infections, Piura
Tesis
Bueno, Mendizábal Hamilton Chen. "Caracterización Fenotípica y Molecular de Cepas de Yersinia Ruckeri Aisladas de Oncorhynchus Mykiss, del Centro Piscícola “El Ingenio” – Huancayo." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2012. https://hdl.handle.net/20.500.12672/2634.
Full textDemand for rainbow trout in our country has increased significantly in recent years, so the industry dedicated to the culture of this species has also increased its number, and those already engaged in this activity have been in need of increase production of farmed trout. The disease enteric red mouth is one of the major diseases affecting the cultivation of trout, causing major economic losses, the causative agent is the bacterium Yersinia ruckeri, which is transmitted from one fish to another by contact and by water . The present study aimed to isolate and characterize phenotypic and molecular strains of Yersinia ruckeri in rainbow trout fish obtained in the center "El Ingenio" - Huancayo, to increase knowledge of the biology of this disease agent, and relate strains isolated from fish with symptoms of disease, with those isolated from fish without symptoms of disease. This study was to realize at the Fish Farming Center "El Ingenio" - Junin and laboratory of Molecular Microbiology and Biotechnology of San Marcos, Lima, in the 2010. Fish were collected with symptoms of enteric disease red mouth (EBR) and without symptoms of this, identified through biochemical tests, 34 strains Y.ruckeri presumptive and confirmed by PCR, 30 of them, all strains identified belong to biotype 1. Susceptibility testing was performed antimicrobial resistant strains found oxolinic acid, chloramphenicol, tetracycline, amoxicillin; 4 are reported multiple resistant strains. For molecular genetic analysis techniques used Enterobacterial repetitive intergenic consensus PCR (ERICPCR), repetitive extragenic palindromic PCR (REP-PCR) and PCR extragenic repeating elements (BOX-PCR), determining intraspecific variability in strains isolated from fish with symptoms like fish without symptoms of EBR. Keywords: Enteric redmouth disease (ERM), Yersinia ruckeri, rainbow trout, phenotypic characterization of Y. ruckeri, molecular characterization of Y. ruckeri.
Tesis
Rua, Fernandez Jorge. "Estudio de asociación entre los SNPs rs4073 y rs2227543 del gen interleucina 8 (IL-8) y presencia de paraparesia espástica tropical (PET) en individuos peruanos portadores del virus HTLV-1." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6653.
Full textTesis
González, Farré Blanca. "Síndromes Linfoproliferativos Asociados a Inmunodeficiencias Secundarias: Papel de la Infección por Virus Herpes Oncogénicos y la Diferenciación Plasmocelular." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/572064.
Full textImmunodeficiency associated lymphoid proliferations are a heterogeneous group of lesions frequently related with viral infection. In this thesis we have studied two of these lesions in order to characterize their clinico-biological spectrum, define their clinical heterogeneity and to identify prognostic variables. On the one hand, we analyzed a series of 35 patients with post-trasplant lymphoproliferative disorders (PTLD). EBV infection was observed in 28 (80%) cases being latency II and III the most frequently observed 22 (79%). Intratumoral EBV replication was detected in 17 (60%) cases. Among these, XBP1 activation was observed in 11/12 evaluable cases. Intriguingly, the combination of latency III infection and EBV replication identified a high-risk subgroup of patients with significantly shorter survival (overall survival at 1 year 18% vs 48%) and early-onset (median of 7 vs 26 months) PTLD. Moreover, these patients appear to be more heavily immunosuppressed, so they exhibit lower rates of rejection and graft vs host disease but higher rates of cytomegalovirus reactivation. These results suggest that immunohistochemical study of latent and lytic EBV genes in the clinical practice may help to select higher-risk patients to new therapies including antiviral treatments. On the other hand, we have reviewed 66 biopsies of 61 patients with HHV8 infection. We identified 13 (20%) cases of HHV8-related reactive lymphoid hyperplasia, 2 (3%) HHV8 plasmablastic proliferations of the splenic red pulp, 28 (42%) multicentric Castleman disease (MCD), 6 (9%) germinotropic lymphoproliferative disorders (GLPD), and 17 (26%) HHV8-related lymphomas. As expected, the pathologic subtype was predictive of overall survival (P<0.05). Forty-seven of our cases were HIV positive (77%). Reactive HHV8 proliferations were frequently associated with systemic symptoms but never progressed to overt HHV8-positive lymphoma. Two cases had a plasmablastic proliferation limited to spleen. Eight cases of MCD had a previously unrecognized presentation shortly after the diagnosis of HIV infection, six cases had cavity effusions, and three showed plasmablast enriched proliferations. One GLPD was EBV negative and three occurred in HIV-positive patients with distinctive clinical and morphological features. Two of the HHV8-related lymphomas did not fulfill the criteria for previously recognized entities. All these findings expand the clinical and pathological spectrum of HHV8-related lymphoid proliferations, which is broader than current recognized.
Julca, Silva Luis Alfredo. "Prevalencia de enfermedades transmitidas por vectores en perros domésticos de zonas rurales del departamento de Tumbes." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2020. https://hdl.handle.net/20.500.12672/15527.
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Soto, Rodriguez Rosa Andrea Penelope. "Detección molecular del virus del distemper canino en casos clínicos de caninos domésticos no vacunados y determinación de los factores de riesgo." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6758.
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Canales, K'ana Dante Hernan. "Virus del distemper canino: revisión actualizada del agente y la patogenia de la enfermedad." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2020. https://hdl.handle.net/20.500.12672/12267.
Full textTrabajo de suficiencia profesional
Santos, La Torre Jacqueline Fiorella. "Presencia de anticuerpos contra el virus de distemper canino en perros domésticos (canis lupus familiaris) de áreas rurales habitadas por el zorro de sechura (lycalopex sechurae)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3926.
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Candelario, Marín Javier Eduardo. "Asociación de la presencia de anticuerpos neutralizantes contra el virus herpes equino-1/4 y problemas reproductivos en yeguas de tres criaderos de caballo peruano de paso del distrito de Cieneguilla - Lima, Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/7056.
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Castro, Sanguinetti Gina Ruth, and Sanguinetti Gina Ruth Castro. "Caracterización molecular y filogenética de cepas emergentes del virus de la diarrea epidémica porcina detectadas en el Perú." Master's thesis, Universidad Nacional Mayor de San Marcos, 2016. http://cybertesis.unmsm.edu.pe/handle/cybertesis/6085.
Full textCaracteriza molecularmente y filogenéticamente las cepas emergentes del PEDV (Virus de la Diarrea Epidémica Porcina) en nuestro país obtenidas de lechones de 1 a 3 semanas de edad en los años 2013 y 2014, mediante el secuenciamiento del dominio S1 del gen S, teniendo como hipótesis que los brotes ocurridos tienen como origen a las cepas norteamericanas debido a la estrecha relación comercial porcina existente entre Perú y Estados Unidos.
Tesis
Grados, Trinidad Julia Melina. "Determinación de anticuerpos contra el virus de la reticuloendoteliosis aviar en gallinas ponedoras mediante la prueba de ELISA." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/720.
Full text--- The objective of this study is to determinate the presence of antibodies against the Reticuloendotheliosis virus (REV) in flocks of layers hens using the ELISA test. The samples were collected in the period of July 2004 to March 2005 and were evaluated. It was taken 630 serum samples of 42 flocks in production of 28 commercial farms from geografic zones like the department of La Libertad and the province of Lima. In the results were found 33.33% (14/42) seroreactors flocks; of these the 22.22% (6/27) were from Lima and 53.33% (8/15) from La Libertad, showing the presence of the virus in 7% of the studied population that was the referential prevalence used. It was not founded a significative statistical association in the three studied variables: previous tumor problems, etareo group and genetic line. This is a first study made in layers hens, which the results show the presence of the REV in Peru. Therefore, it is recommended to make serologic operations in different geographic regions of Peru, including other avian species of industrial raising, to consider to this virus as part of the differential diagnostic in presence of neoplasias in layers hens and to realize later studies to confirm definitively the serologic diagnostic. Key Words: Reticuloendotheliosis virus, REV, antibodies, ELISA test, layers hens.
Tesis
Castro, Sanguinetti Gina Ruth. "Caracterización molecular y filogenética de cepas emergentes del virus de la diarrea epidémica porcina detectadas en el Perú." Master's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/6085.
Full textTesis
Trujillo, Imarai Agustín Alejandro. "Respuesta inmunológica de trucha arcoiris (Oncorhynchus mykiss) frente a la estimulación con la proteína VP1 recombinante del virus de la necrosis pancreática infecciosa: relevancia de los linfocitos TH1 y TH." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/151141.
Full textLa necrosis pancreática infecciosa es una enfermedad que afecta principalmente a los peces salmónidos, generando un impacto a nivel mundial por las mortalidades y las pérdidas económicas. El agente responsable de esta enfermedad es un virus RNA doble hebra que posee dos segmentos; el segmento A que codifica para una poliproteína que posteriormente a origen a las proteínas de la cápside viral VP2 y VP3. El segmento B codifica para la proteína VP1, que es un RNA polimerasa RNA dependiente. El alto peso molecular de VP1 sugiere que esta podría ser una proteína altamente inmunogénica y por lo tanto un buen candidato para el diseño de vacunas recombinantes. Con el objetivo de evaluar sus propiedades inmunogénicas, VP1 fue expresada en Escherichia coli, utilizando el vector de expresión pET21a/VP1, y purificada bajo condiciones desnaturantes. Se inmunizaron truchas arcoíris con VP1 y se analizó la respuesta linfocitaria, a través de ensayos de proliferación y análisis de transcritos mediante qRT-PCR. VP1r indujo un aumento en la expresión transcripcional de IFNγ, IL-12, T-bet e IL-4/13 A de los órganos linfoides de la trucha, además indujo proliferación en ensayos de re-estimulación in vitro. Estos resultados sugieren que VP1r es una proteína que induce una respuesta linfocitaria tipo Th1 y Th2
Infectious pancreatic necrosis is a disease that mainly affects salmonid fish, generating a global impact due to mortalities and economic losses. The agent responsible for this disease is a double-stranded RNA virus that has two segments; segment A that codes for a polyprotein that subsequently originates the viral capsid proteins VP2 and VP3. Segment B encodes VP1 protein, which is an RNA-dependent RNA polymerase. The high molecular weight of VP1 suggests that this could be a highly immunogenic protein and therefore a good candidate for the design of recombinant vaccines. In order to evaluate its immunogenic properties, VP1r was expressed in Escherichia coli, using the expression vector pET21a / VP1, and purified under denaturing conditions. Rainbow trout were immunized with VP1r and the lymphocyte response was analyzed, through proliferation assays and transcript analysis by qRT-PCR. VP1r induced an increase in the transcriptional expression of IFNγ, IL-12, T-bet and IL-4/13 A of the lymphoid organs of the trout, and induced proliferation in vitro re-stimulation assays. These results suggest that VP1r is a protein that induces a Th1 and Th2 type lymphocyte response
Financiamiento: Proyecto Fondecyt 1161045 RCUK - Conicyt MR-N2625X1
Calcina, Isique Juan Fernando. "Anticuerpos contra el virus del síndrome reproductivo y respiratorio porcino y la frecuencia de problemas respiratorios en porcinos de una granja tecnificada en etapas de recría y acabado." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/4238.
Full textPorcine reproductive and respiratory syndrome is a great important economic disease characterized by respiratory problems in pigs. The aim of this study was detect antibodies against porcine reproductive and respiratory virus (PRRSV) and associated them by respiratory problems in a batch from tech pig farm in Lima. Serum samples were collected from 30 pigs in a batch of 200 pigs in three consecutive stages at 32, 61 and 136 days old to determine antibody against PRRSV by indirect ELISA test. The Batch studied was daily followed to find respiratory problems. 26.7% (8/30) of samples had antibody anti PRRSV at 32 days old with samples-on-positive coefficient (M/P) among 0.4 to 1.6, at 61 day old only one pig had PRRSV antibodies while the 96.7% (29/30) had antibody against PRRSV at 136 days old. There were no observed respiratory problems in situ in the batch studied in the whole period of observation. The age of animals and anti PRRSV antibodies was associated (P ≤ 0.05). Keywords: PRRSV, ELISA, respiratory problems, pig tech farm.
Tesis
Lavado, Avalos Nicol Jhoseph. "Evaluación de la protección de una vacuna vectorizada contra la Enfermedad de Gumboro bajo condiciones controladas en pollitas de postura comercial." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6424.
Full textTesis
Izquierdo, Lara Ray William. "Diseño y construcción de partículas pseudovíricas (VLPs) generadas a partir de la fibra 2 de Fowl Adenovirus serotipo 4." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/5953.
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Martinez, Monroe Carmen Elena. "Virus respiratorios en pacientes menores de 2 años internados por infecciones respiratorias bajas en el Hospital Militar Central durante el año 2013." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/9182.
Full textPublicación a texto completo no autorizada por el autor
Determina la prevalencia y las características clínicas, epidemiológicas y laboratoriales de los virus en infecciones respiratorias bajas en pacientes internados en el Hospital Militar Central en el periodo 2013. El estudio es de tipo descriptivo, transversal de casos. La muestra estuvo constituida por 150 casos de menores de 2 años que ingresaron al Servicio de Hospitalización Pediátrica del Hospital Militar Central con diagnóstico de infección respiratoria baja en el periodo que corresponde al estudio. Se usó una ficha de datos la cual fue validada por los médicos asistentes del Servicio de Pediatría del Hospital Militar Central. Para el análisis de datos se utilizó el programa SPSS versión 21. El 59,3% fueron varones y el 40,7% mujeres. La media de la edad global fue de 11,3+/-6,0 meses, siendo la mínima de un mes y la máxima de 24 meses. El diagnóstico de ingreso de mayor frecuencia fue SOBA (45,3%).La mayoría de pacientes tuvieron estancias entre los 4 a 7 días (59,3%).El 7,3% de los pacientes ingresó a la Unidad de Cuidados Intensivos. Se usó antibióticos en el 32% de los casos. Se usó beta agonistas en el 63,3%.El 55,3% de los pacientes uso corticoides. En el 5,3% se usó ventilador mecánico. Hubo SOB recurrente en el 6,7% de los casos. Los meses de mayor presentación de casos es entre julio a septiembre (40,6%).En invierno se presentó el 50,7% de los casos. El 4% tuvo el antecedente de enfermedad cardiaca. El 6% tuvo el antecedente de prematuridad. El 2,7% tuvo el antecedente de enfermedad pulmonar crónica. Solo 2% de los pacientes tuvieron vacunación antigripal. El 14,7% tuvo contacto epidemiológico. Hubo una mayor frecuencia de signos de atrapamiento de aire en el 42,7% de los casos seguido de compromiso parenquimal (24%). El agente viral de mayor frecuencia fue el virus sincitial respiratorio (26%), seguido del adenovirus (13,3%). La complicación de mayor frecuencia fue la atelectasia (5,3%), seguido de empiema (4%). En el 90% de los casos el método de detección fue la prueba de inmunofluorescencia indirecta. El germen atípico identificado con mayor frecuencia fue la Chlamydia pneumoniae (6,7%). Se concluye la prevalencia de virus en el Hospital Militar Central en los pacientes internados fue de 5.6%. Hubo una mayor frecuencia de virus sincitial respiratorio y adenovirus. El germen atípico de mayor frecuencia fue la Chlamydia pneumoniae. La estacionalidad de los virus en general es en invierno. El método adecuado para identificar al germen involucrado fue la inmunofluorescencia indirecta.
Trabajo académico
Montesinos, Paredes Milagros de Jesús. "Anticuerpos contra el virus de la Parainfluenza 3 en cerdos de crianza tecnificada y no tecnificada beneficiados en dos mataderos de Lima." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/15628.
Full textEl documento digital no refiere asesor
El virus de la parinfluenza 3 (VPI3), es uno de los agentes virales involucrados en el complejo respiratorio que afecta principalmente a los bovinos y otras especies. El objetivo del presente estudio fue determinar la seroprevalencia de este agente viral en porcinos del valle de Lima beneficiados en dos mataderos de la ciudad de Lima. Para este fin se colectaron muestras de suero de porcinos de ambos sexos entre 2 a más de 6 meses de edad provenientes de granjas tecnificadas (n= 192) y de porcinos criados sin o con escasa tecnología (n= 192) para la detección de anticuerpos contra el VPI3 mediante la técnica de neutralización viral. El 5.5±2.3% (21/384) de los porcinos tuvieron anticuerpos contra el VPI3. De este total, el 5.2±1.1% (10/192) y 5.7±1.2% (11/192) de los porcinos de crianza tecnificada y no tecnificada respectivamente, presentaron anticuerpos contra el VPI3. Los títulos de anticuerpos tuvieron un rango de 4 a 64 y fueron detectados en animales mayores de 3 meses de edad. Los resultados indican que el VPI3 no estuvo involucrado en problemas respiratorios en los porcinos muestreados en 2008.
Ghersi, Chávez Bruno Marco. "Presencia del virus de la enfermedad de Newcastle en las aves silvestres de los humedales de Puerto Viejo." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/16275.
Full textPublicación a texto completo no autorizada por el autor
Evalúa la presencia de de cepas de paramixovirus aviar tipo 1 en los humedales y lagunas de Puerto viejo, se colectaron heces frescas de 297 aves silvestres encontradas durante el año 2006. Para el aislamiento viral, las muestras fueron inoculadas en huevos embrionados SPF. Se logró aislar paramixovirus aviar tipo 1 en 3/297 muestras, haciendo una prevalencia de 1.32%. Los virus aislados no ocasionaron la muerte de los embriones inoculados sugiriendo que las cepas son de tipo lentogenico. Los resultados del estudio demuestran la presencia del virus en las poblaciones de aves silvestres de los humedales de Puerto Viejo.
Bautista, del Río Karen Elízabet. "Detección de la presencia del virus de Necrosis Hematopoyética Epizoótica (EHNv) en truchas arcoíris (Oncorhynchus mykiss) criadas en piscigranjas de sistemas semi-intensivos de la sierra del Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/7444.
Full textTesis
Quispe, Turin Rudy. "Caracterización de la interrelación, entre las especies involucradas en la transmisión del virus de influenza A en 3 villas del departamento de Tumbes." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/12502.
Full textBusca caracterizar mediante la cuantificación, la interrelación de las especies animales involucradas en la transmisión del virus de influenza A en tres villas del departamento de Tumbes (Matapalo, Garbanzal y Casitas), mediante el desarrollo de un protocolo basado en el método de Scan Sampling. Este método permitió registrar todas las especies animales observadas en ocho diferentes momentos del día, en 20 diferentes puntos en cada villa, para luego evaluar cuantas veces fue observada cada especie, que especies se interrelacionaban, cuantas veces se interrelacionaron y a que distancias estaban las especies que se interrelacionaban. Para ello, las especies animales observadas se agruparon por su importancia como hospedadores del virus de influenza, en diez diferentes “categorías animales”, de las cuales las más importantes eran “pollos”, “cerdos”, “patos” y “humanos”. De las diez categorías definidas, la categoría “pollos” fue observada 791 veces, la categoría “cerdos” 469 veces, la categoría “humanos” 335 veces y la categoría “patos” 133 veces.Se registraron 20486 interrelaciones, de las cuales entre las especies importantes para el virus de influenza A, fueron la de pollo/ cerdo (1231 interrelaciones), humanos/cerdos (481 interrelaciones), humano/pollo (702 interrelaciones) y cerdo/pato (281 interrelaciones). Los resultados mostraron la existencia de interrelación entre las especies importantes en el ciclo biológico del virus de influenza, como son los humanos, cerdos, pollos y patos.
Tesis
Nuñure, Ortega Jeferson. "Caracterización fenotípica e identificación de especies patógenas de Aeromonas sp. aisladas de truchas arcoíris (Oncorhynchus mykiss) clínicamente enfermas de piscigranjas del Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/15524.
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Gutierrez, Paucar Luis Cesar. "Genotipificación de los linajes del virus de distemper canino presente en perros domésticos (Canis lupus familiaris) de Lima Metropolitana." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2020. https://hdl.handle.net/20.500.12672/16164.
Full textQuino, Quispe Raquel. "Detección de parvovirus canino tipo 2 (CPV 2) en perros de Lima Metropolitana mediante PCR." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/7091.
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Villacaqui, Ayllón Eglinton Rubén. "Seroprevalencia del virus de la rinotraqueitis infecciosa bovina (vRIB) en bovinos de crianza extensiva de tres distritos de la provincia de San Pablo (San Pablo, Tumbaden y San Bernardino), Departamento de Cajamarca." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2005. https://hdl.handle.net/20.500.12672/742.
Full text--- The present research have primarily objective to determine the seroprevalence of the bovine herpesvirus 1 (BHV-1), causative agent of Infeccious Bovine Rhinotracheitis (IBR); in bovine of extensive rearing without history of vaccination, in the districts of San Pablo, Tumbaden and San Bernardino, Province of San Pablo, Cajamarca Department. The presence of antibodies was to show for viral neutralization test in 480 blood serum bovine samples that was conducted from October to November 2004. The 0.6 ± 0.7% (3/480) of total samples had showed neutralized antibody against of infeccious bovine rhinotracheitis virus (IBRv) with higher title at 1:2; two bovines with titles of 1:64 and the other one with 1:32; all of them are female, older than six years and they belong to same animal lot. These results contrast with others accomplish researches, where seroprevalence is higher.
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