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Littérature scientifique sur le sujet « Subtipo H1N1 del virus de la influenza A »
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Articles de revues sur le sujet "Subtipo H1N1 del virus de la influenza A"
Porras-Cortés, Guillermo, Erika Lawrence-Berroterán, Claudia Martínez-Rivas, Violeta Sclafani-Vivas, Manuel Balladares-Munguía et Salvador Rizo-Centeno. « Características de la infección por influenza tipo A en un contexto pandémico en un hospital de Nicaragua ». Encuentro, no 83 (21 octobre 2009) : 80–87. http://dx.doi.org/10.5377/encuentro.v0i83.3602.
Texte intégralGómez López, Arley. « Pandemia por COVID19 – Un Reto en tiempo real ». Revista Repertorio de Medicina y Cirugía 29, no 2 (18 août 2020) : 1–3. http://dx.doi.org/10.31260/repertmedcir.01217372.1058.
Texte intégralTamez, Silvia, Catalina Eibenschutz, Xareni Zafra et Raquel Ramírez. « La articulación público-privada en la producción de vacunas en México ». Saúde em Debate 40, no 111 (décembre 2016) : 9–21. http://dx.doi.org/10.1590/0103-1104201611101.
Texte intégralGocník, M., T. Fislová, V. Mucha, T. Sládková, G. Russ, F. Kostolanský et E. Varečková. « Antibodies induced by the HA2 glycopolypeptide of influenza virus haemagglutinin improve recovery from influenza A virus infection ». Journal of General Virology 89, no 4 (1 avril 2008) : 958–67. http://dx.doi.org/10.1099/vir.0.83524-0.
Texte intégralPaez Pesantes, Xavier Ulpiano, Kira Sánchez Piedrahita, Margarita Bravo et Inés Arboleda. « Influenza a H1N1. Reporte de caso ». Medicina 22, no 1 (14 septembre 2020) : 30–33. http://dx.doi.org/10.23878/medicina.v22i1.851.
Texte intégralSalazar, Enrique Rojas, Rodrigo Uño Tala, Yercin Mamani Ortiz, Betty Melgarejo, Efrain Vallejo, Daniel Illanes Velarde et Mayra Rocha Choque. « Perfil epidemiológico de la influenza humana a H1N1 ». South Florida Journal of Health 2, no 2 (8 juin 2021) : 242–53. http://dx.doi.org/10.46981/sfjhv2n2-009.
Texte intégralVázquez, Cynthia, Shirley Villalba, María José Ortega, Andrea Gómez de la Fuente, María Liz Gamarra, Angélica Oviedo, Juan Torales et Marta Von Horoch. « Evolución Genética del Virus Influenza A(H1N1) pdm09 en Paraguay 2009-2016 ». Revista del Instituto de Medicina Tropical 12, no 2 (30 décembre 2017) : 3–13. http://dx.doi.org/10.18004/imt/20171223-13.
Texte intégralAranda-Paniora, Franklin, et Rómulo Reaño-Salazar. « Influenza A (H1N1) en pacientes pediátricos con comorbilidad crónica ». Anales de la Facultad de Medicina 71, no 4 (9 mai 2011) : 283. http://dx.doi.org/10.15381/anales.v71i4.109.
Texte intégralHernández-Collazo, A., E. Cuéllar-Garrido et V. Rivera. Barragán. « Efecto protector de la vacuna estacional inactivada trivalente para uso en 2008-2009, contra virus pandémico A/H1N1 ». Lux Médica 6, no 18 (31 mai 2011) : 03–07. http://dx.doi.org/10.33064/18lm20111616.
Texte intégralVásquez, Enoe Arely, Mireya Matamoros et Nicolás Sabillón. « Reporte de casos por infección de virus de Influenza A H1N1 : Hallazgos de autopsia ». Revista de Ciencias Forenses de Honduras 4, no 1 (29 juin 2018) : 10–16. http://dx.doi.org/10.5377/rcfh.v4i1.8697.
Texte intégralThèses sur le sujet "Subtipo H1N1 del virus de la influenza A"
Miranda-Choque, Edwin, Carlos Ramírez, Jorge Candela-Herrera, Javier Díaz, Ana Fernández, Lenka Kolevic, Eddy R. Segura et Sonia Farfán-Ramos. « Niños hospitalizados con neumonía por influenza AH1N11/2009 pandémico en un hospital de referencia de Perú ». Instituto Nacional de Salud (INS), 2014. http://hdl.handle.net/10757/314691.
Texte intégralObjectiveTo determine the clinical and demographic characteristics of pneumonia with influenza virus AH1N1/2009 pandemic at the National Institute of Child. Methods. Retrospective case series in children hospitalized for influenza pneumonia pandemic AH1N1/2009 in a pediatric hospital. Reviewed the medical records between the months of June to September 2009. All cases had virological confirmation, we describe the clinical characteristics and conditions of severity. Results. A total of 74 children of pneumonia with influenza virus AH1N1/2009 pandemic (NVIp), of those 50 were community acquire pneumonia viral (NACv) and 24 pneumonia nosocomial viral (NNv), 16 required mechanical ventilation. 12 died, all had preexisting factors. NN cases showed statistical association with mortality. The most frequent factors were malnutrition, respiratory infections, congenital heart disease and neurological deficits In NACv cases the children under 6 years accounted for 72% (36/50). The median disease duration was 5 days. The most frequent symptoms were fever, cough, runny nose. Received oseltamivir 82%. The chest radiograph 48% of cases showed patchy infiltrates and 44% interstitial infiltrate on chest radiograph. Protein c reactive (CRP) more than 10mg / L was significantly associated with respiratory failure (p <0.05). Conclusions. Cases of NN found who had more mortality, even those who had the highest PCR and those with preexisting condition.
Valdivia-Tapia, María del Carmen, et Nilton Yhuri Carreazo. « Encefalopatía no fatal por influenza AH1N1 en paciente pediátrico ». Instituto Nacional de Salud (INS), 2016. http://hdl.handle.net/10757/620660.
Texte intégralRodríguez, Montoya Ronald Milton. « Variables respiratorias asociadas a mortalidad del síndrome de distrés respiratorio agudo por influenza A (H1N1) : Hospital Alberto Sabogal, Callao - Perú ». Master's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/4209.
Texte intégralTesis
Siqueira, Giselle Angélica Moreira de. « EPIDEMIA DA INFLUENZA A (H1N1) 2009 NO ESTADO DE GOIÁS/BRASIL : CASOS E ÓBITOS ». Pontifícia Universidade Católica de Goiás, 2013. http://tede2.pucgoias.edu.br:8080/handle/tede/4075.
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SIQUEIRA, Giselle Angelica Moreira de. Epidemic Influenza A (H1N1) 2009 in the state of Goiás/Brazil: cases and deaths. Dissertation (MSc in Environmental Sciences) – Catholic University of Goiás, Goiânia, 2013. Between late March and early April 2009, were the first reported cases of human infection caused by a new viral subtype Influenza A (H1N1) in Southern California and near San Antonio, Texas, USA, and then in Mexico and Canada. Until July 6, 2009, 905 cases were confirmed by the Ministry of Health, with reports of 23 states and the Federal District. This study described the profile of confirmed cases and deaths affected by Influenza A ( H1N1 ) in 2009 in the state of Goias and Brazil through a descriptive ecological study of confirmed cases and deaths affected by Influenza A virus (H1N1) 2009 in the State of Goias and Brazil between epidemiological weeks 16 th to 52 th, variables of research Influenza record, feeding SINAN Influenza Web were selected such as epidemiological week, age, gender, education, signs and symptoms, comorbidities, vaccination status, hospitalizations and evolution. Among the total number of cases reported during the epidemic , more than 45% were confirmed Influenza A (H1N1) in Goiás and in Brazil , with 14.9% and 3.9% subsequently died respectively. Females were predominant, those over 6 % were pregnant. The age range was found between 15 and 45 years, with the primary and secondary school levels observed schooling. Among the signs and symptoms , more than 95% of cases and deaths had fever, cough and dyspnoea, less than 30% had comorbid conditions, the occurrence of hospitalizations of cases was 96% and 45% in Goiás in Brazil, while hospitalization those who subsequently died was above 96%, less than 14% of cases and deaths have taken the vaccine against influenza (H1N1). It was concluded that it was possible to know the profile of cases and deaths from socio demographic and clinical characteristics during the epidemic period Influenza (H1N1) 2009 in Goias and Brazil, many lessons were learned that will assist in the consolidation of plans to tackle the unusual situations of epidemic and pandemic character and guide the development of public policies that will strengthen the surveillance system of disease, health care, implementation of laboratory diagnosis, mass vaccination and personal protection and respiratory hygiene network.
SIQUEIRA, Giselle Angélica Moreira de. Epidemia da Influenza A (H1N1) 2009 no estado de Goiás/Brasil: casos e óbitos. Dissertação (Mestrado em Ciências Ambientais) – Pontifícia Universidade Católica de Goiás, Goiânia, 2013. Entre o final de março e começo de abril de 2009, foram notificados os primeiros casos de infecção humana causada por um novo subtipo viral Influenza A (H1N1), no sul da Califórnia e próximo de San Antonio, no Texas, Estados Unidos, e, em seguida, no México e Canadá. Até o dia 06 de julho de 2009, 905 casos foram confirmados pelo Ministério da Saúde, com notificações de 23 estados e do Distrito Federal. Neste estudo foi descrito o perfil dos casos confirmados e óbitos acometidos por Influenza A (H1N1) em 2009 no Estado de Goiás e Brasil por meio de um estudo ecológico descritivo dos casos confirmados e óbitos acometidos pelo vírus Influenza A (H1N1) 2009 no Estado de Goiás e Brasil entre as semanas epidemiológicas 16ª a 52ª, foram selecionadas variáveis da ficha de investigação de Influenza, que alimenta o SINAN Influenza Web tais como semana epidemiológica, faixa etária, gênero, escolaridade, sinais e sintomas, comorbidades, situação vacinal, hospitalizações e evolução. Dentre o total de casos notificados durante a epidemia, mais de 45% foram confirmados por Influenza A (H1N1) em Goiás e no Brasil, sendo que 14,9% e 3,9% evoluíram para o óbito respectivamente. O gênero feminino foi predominante, destas mais de 6% eram gestantes. A faixa etária encontrada foi entre 15 a 45 anos, sendo o ensino médio e fundamental os níveis de escolaridade constatados. Dentre os sinais e sintomas, mais de 95% dos casos e óbitos apresentaram febre, tosse e dispneia, menos de 30% apresentaram comorbidades, a ocorrência de hospitalizações dos casos foi de 96 % em Goiás e 45% no Brasil, enquanto que a hospitalização dos que evoluíram para o óbito foi acima de 96%, menos de 14% dos casos e óbitos tomaram a vacina contra a Influenza (H1N1). Concluiu-se que foi possível conhecer o perfil de casos e óbitos a partir das características sócio demográficas e clínicas durante o período epidêmico da Influenza (H1N1) 2009 em Goiás e no Brasil, foram aprendidas muitas lições que auxiliarão na consolidação de planos de enfrentamento a situações inusitadas de caráter epidêmico e pandêmico e norteará a construção de políticas públicas que fortalecerá o sistema de vigilância da doença, da rede de atenção à saúde, implementação de diagnóstico laboratorial, vacinação massiva e medidas de proteção individual e higiene respiratória.
Scarpa, Fernanda Cristina. « Epidemiologia do vírus influenza A (H1N1) em crianças internadas no serviço de pediatria do Hospital de Clínicas de Porto Alegre no ano de 2009 ». reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/39656.
Texte intégralIntroduction: A new Influenza virus stem, H1N1, determined a pandemic in 2009 with great global repercussions. This virus infected mainly young adults and children under two years of age with marked increase in morbimortality when compared with annual rates. Objective: To analyze epidemiological and clinical characteristics of the infection by influenza A (H1N1) virus in children, in order to improve knowledge to a better approach in future pandemics. Methods: Cross section study with review of patient records for all children, between zero and 16 years, hospitalized with flu-like disease at Hospital de Clínicas de Porto Alegre (HCPA) in 2009. Identification of H1N1 virus was done through PCR technique on reference laboratory. Results: One hundred ninety-one children were hospitalized with suspected H1N1 infection. Of these, 83 (43%) patients were tested for the H1N1 virus, 28 (34%) being positive and 55 (66%) negative. H1N1 patients were older, 27 (7-108) versus seven months old (3-32) (p=0,015), all had fever versus 70% of the other group (p=0,015), they arrived at the hospital with lower oxygen hemoglobin saturation, 80% (±20%) versus 95% (±4%) (p<0,001) and when placed in mechanical ventilation they needed greater end expiratory pressures, ten (±3) to five (±1) cm H2O (p=0,001) and inspired oxygen fraction, one (0,65-1) versus 0,4 (0,4-1) (p= 0,053) . There was no difference in terms of need for hospitalization in intensive care unit, need of ventilatory support or death. Conclusion: Children infected by H1N1 were more severely ill at arrival to the hospital, although they had similar outcomes to non-infected patients.
Guissa, Vanessa Ramos. « Imugenicidade e segurança da vacina contra influenza A H1N1/2009 em pacientes com dermatomiosite juvenil ». Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/5/5141/tde-03122013-113148/.
Texte intégralObjectives: To assess the immunogenicity and safety of influenza A H1N1/2009 vaccine in juvenile dermatomyositis (JDM) patients compared to age-matched controls and the possible association of seroconversion rates whith demographic, muscle enzymes, JDM scores, lymphopenia and treatment in JDM patients routinely followed at two Pediatric Rheumatology Units. Methods: Thirty JDM patients between 9 and 21 years old and 81 healthy age-matched controls were vaccinated with non-adjuvanted influenza A H1N1/2009 vaccine. All participants were evaluated pre- and 21 days postvaccination. Seroconversion and seroprotection rates, geometric mean titres (GMT) and factor increase (FI) in GMT were assessed. Adverse events, as well as muscle enzymes, JDM scores, lymphopenia and current treatment in JDM were also evaluated. Results: JDM patients and healthy controls had similar median of current age [15.5 (9-21) vs. 15 (9-21) years, p=0.511] and frequencies of female gender (63% vs. 51%, p=0.286). The median disease duration of JDM was 5.5 (2-17) years. After immunization, seroconversion rate was significantly lower in JDM patients compared to age-matched controls (86.7 vs. 97.5%, p=0.044), whereas seroprotection (p=0.121), GMT (p=0.992) and FI in GMT (p=0.827) were similar in both groups. Clinical and laboratorial evaluations revealed that JDM scores and muscle enzymes remained stable throughout the study (p > 0.05). A higher frequency of chronic course was observed in non-seroconvert compared to seroconverted (100% vs. 27%, p=0.012). Regarding treatment, a lower rate of seroconversion was observed in patients treated with methotrexate (100% vs. 38%, p=0.036) and in those with a combination of prednisone, methotrexate and cyclosporine (50% vs. 4%, p=0.039). Local and systemic adverse events were mild and similar in JDM patients and controls (p > 0.05). Conclusions: This was the first study that evaluated the influenza A H1N1/2009 vaccine in JDM, identified that chronic course and immunosuppressive therapy were factors hampering immune response in patients. A single dose of non-adjuvanted influenza A/H1N1 2009 vaccine was seroprotective in assessed patients with no evident deleterious effect in disease itself
Dias, Ronaldo Ferreira. « Ensaio molecular para vigilância epidemiológica de gripe com ênfase no diagnóstico de Influenza A H1N1 ». Instituto de Tecnologia em Imunobiológicos, 2011. https://www.arca.fiocruz.br/handle/icict/6074.
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Fundação Oswaldo Cruz. Instituto de Tecnologia em Imunobiológicos. Rio de Janeiro, RJ, Brasil.
O uso de métodos moleculares tem sido apontado como uma das principais ferramentas para o diagnóstico de doenças infecciosas. Dentre as técnicas disponíveis, a PCR em tempo real tem sido uma das mais amplamente utilizadas. A partir dos achados das inúmeras pesquisas desenvolvidas em virtude da epidemia de Influenza A H1N1 em 2009, tal metodologia foi preconizada pelo CDC como sendo a mais eficiente para a confirmação desta patologia na população. A rápida disseminação da epidemia de 2009, em território Brasileiro, evidenciou a necessidade de adoção de uma alternativa de teste em âmbito nacional, cujos custos fossem mais compatíveis com os recursos de que dispõe o Sistema Único de Saúde (SUS). Esta dissertação buscou estabelecer um protótipo de produto para a Vigilância epidemiológica de Influenza A H1N1 a partir de uma plataforma de PCR em Tempo Real, visando contribuir para o estabelecimento de uma rede de vigilância epidemiológica baseada em ensaios moleculares, com a definição de uma matriz de extração semiautomatizada e um equipamento para a realização de PCR em Tempo Real. Este trabalho foi desenvolvido por meio da comparação de matrizes de extração e de equipamentos de PCR em tempo real dos principais fornecedores internacionais. A empresa que obteve a melhor avaliação segundo os critérios descritos foi a Biotools®, por ter apresentado uma proposta competitiva quanto aos custos das plataformas e insumos necessários, além de um atraente pacote de transferência de tecnologia. Após a definição dos equipamentos e insumos, foi iniciada a aferição de um protótipo de modelo nacionalizado de diagnóstico. Em paralelo, buscou-se ainda a melhoria do desempenho do modelo brasileiro, com a avaliação de diferentes composições da mistura de reação, tendo sido também testadas regiões genômicas diferentes daquelas do padrão de referência para o diagnóstico, além da possibilidade do uso de sondas purificadas. Com base nos resultados obtidos, observou-se que a extração semiautomatizada e aquela realizada pelo método manual apresentam um padrão semelhante de eficiência. Também foi comprovada a capacidade de extração do equipamento, inclusive em diluições de amostra pura até uma concentração de 1024 vezes, além da eficiência da purificação de sondas pela técnica de HPLC (High-performance liquid chromatography). Ficou evidenciada a equivalência da reação de PCR em tempo real desenvolvida pelo consórcio IBMP/Bio-Manguinhos quando comparada à reação de PCR em tempo real desenvolvida pelo CDC-EUA, considerado padrão de referência para o diagnóstico molecular de influenza A H1N1. Concomitantemente, o modelo de equipamentos da Biotools(Labturbo/Liongene) oferece, como vantagens, a possibilidade de eliminar a etapa manual de extração indicada pelo protocolo do CDC, e de agregar ao processo a realização de uma extração semiautomatizada, o que facilita a execução do protocolo e amplia o quantitativo de amostras que podem ser examinadas a cada ciclo de trabalho.
Nowadays, molecular tools appear as the main alternatives for diagnosis of infectious diseases. Among the available techniques, Real Time PCR (RT-PCR) has been widely used, coupled to extraction matrices. In view of the findings obtained from several researches conducted due to the Influenza A H1N1 epidemic, this technique is considered by the CDC as the most efficient method to confirm this pathology in an affected population. The rapid expansion of the 2009 epidemic in Brazil evidenced the need of a nationalized alternative diagnostic option, without requiring materials from international (foreign) suppliers, and that could be costeffective to Brazilian National Health System (SUS). The present work aimed at the establishment of a product prototype that could meet such requirements. The choice of an instrument setting based on the Real Time PCR (RT-PCR) platform contributes to an epidemiological surveillance network of molecular assays, and enhances Bio- Manguinhos participation in this field.Other factors that were taken into account concern the economic viability of such instruments, as well as the respective installation and validation protocols and clearance by the National Sanitary Surveillance Agency (ANVISA). According to the aforesaid criteria, the best ranked supplier was BioTools Company, which presented a competitive proposal for cost of platform and consumables, as well as an attractive technology transfer proposal. Different formulations of the reaction mixture were evaluated in order to improve the test performance. It was found that the Real Time PCR (RT-PCR) assay developed by the IBMP/Bio-Manguinhos consortium presented a better efficacy than that of the CDC-USA, which is the reference standard for Influenza A H1N1 molecular diagnosis. Furthermore, BioTools instruments, which were chosen for the tests, have the advantage of eliminating the manual extraction step in the CDC protocol and include a semi-automated extraction, which facilitates the performance and increases the amount of samples processed (throughput of samples).
Ribeiro, Ana Cristina de Medeiros. « Soroproteção reduzida após a vacinação sem adjuvante contra influenza pandêmica A/H1N1 em pacientes com artrite reumatoide ». Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/5/5164/tde-09082013-134250/.
Texte intégralBackground: Pandemic influenza A/H1N1 vaccination yielded seroprotection in more than 85% of healthy individuals. However, similar data are scarce in rheumatoid arthritis (RA) patients. Objectives: The objective of this study is to evaluate the immunogenicity and the short-term safety of anti- pandemic influenza A/H1N1 vaccine in RA patients, and the influence of disease activity and medication to the response. Methods: Three hundred and forty adult RA patients in regular follow-up and treatment, and 234 healthy controls were assessed before and 21 days after adjuvant-free influenza A/California/7/2009 vaccine. Disease activity (DAS28), current treatment and anti-pandemic influenza A/H1N1 antibody titres were also evaluated. Seroprotection (antibody titre >=1:40) and seroconversion (the percentage of patients with a fourfold or greater increase in antibody titre, if prevaccination titre was 1:10 or greater, or a postvaccination titre of 1:40 or greater, if prevaccination titre was less than 1:10) rates, geometric mean titres (GMT) and factor increase in geometric mean titre (FI-GMT) were calculated and adverse events registered. Results: RA patients and controls showed similar (p>0.05) prevaccination seroprotection (10.8% vs. 11.5%) and GMT (8.0 vs. 9.3). After vaccination a significant reduction (p<0.001) was observed in all endpoints in RA patients versus controls: seroprotection (60.0 vs. 82.9%; p<0.0001) and seroconversion (53.2% vs. 76.9%) rates, GMT (57.5 vs. 122.9) and FI-GMT (7.2 vs. 13.2). Disease activity did not preclude seroprotection or seroconversion and remained unchanged in 97.4% of patients. Methotrexate and abatacept were associated with reduced responses. Vaccination was well tolerated with minimal adverse events. Conclusions: The data confirmed both short-term anti-pandemic A/H1N1 vaccine safety and, different from most studies with seasonal influenza, reduced seroprotection in RA patients, unrelated to disease activity and to most medications (except methotrexate and abatacept). Extrapolation of xii immune responses from one vaccine to another may therefore not be possible and specific immunization strategies (possibly booster) may be needed
Hisano, Danielle Martins de Medeiros. « Imunização contra influenza pandêmica em síndrome antifosfolípide primária : gatilho para trombose e produção de autoanticorpos ? » Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5164/tde-20042016-163848/.
Texte intégralChronic rheumatic disease patients exhibit an increased risk for infections. Therefore, vaccination is imperative. Antiphospholipid antibodies (aPL) and thrombosis triggering after infections and vaccination in this population were reported, except for primary antiphospholipd syndrome (PAPS). Study\'s main objective was short and long-term evaluation of a panel of antiphospholipid autoantibodies following pandemic influenza A/H1N1 non-adjuvant vaccine in primary antiphospholipid syndrome patients and healthy controls. Forty-five PAPS and 33 healthy controls were immunized with A/H1N1 pandemic influenza vaccine. They were prospectively assessed at pre-vaccination, 3 weeks and 6 months after vaccination. aPL autoantibodies were determined by an enzyme-linked immunosorbent assay (ELISA) and included IgG/IgM: anticardiolipin (aCL), anti-beta2GPI; anti-annexin V, anti-phosphatidyl serine and antiprothrombin antibodies. Anti-Sm was determined by ELISA and anti-dsDNA by indirect immunfluorescence. Arterial and venous thrombosis were also clinically assessed. Pre-vaccination frequency of at least one aPL antibody was significantly higher in PAPS patients versus controls (58% vs. 24%, p=0.0052). The overall frequencies of aPL antibody at pre-vaccination, 3 weeks and 6 months after immunization remained unchanged in patients (p=0.89) and controls (p=0.83). The frequency of each antibody specificity for patients and controls remained stable in the three evaluated period (p > 0.05). The frequency of each antibody kept invariable in PAPS patients under chloroquine treatment (p > 0.05). At 3 weeks, 2 PAPS patients developed a new but transient aPL antibody (aCL IgG and IgM), whereas at 6 months new aPL antibodies were observed in 6 PAPS patients and none had high titer. Anti-Sm and anti-dsDNA autoantibodies were uniformly negative and no new arterial or venous thrombosis were observed throughout the study. This was the first study to demonstrate that pandemic influenza vaccine in PAPS patients does not trigger short and long-term thrombosis or a significant production of aPL related antibodies. (ClinicalTrials.gov, #NCT01151644)
Aikawa, Nádia Emi. « Imunogenicidade e segurança da vacina contra influenza A H1N1/2009 em pacientes com artrite idiopática juvenil ». Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5164/tde-14122012-110037/.
Texte intégralIntroduction: The influenza H1N1 pandemic in June 2009 resulted in high hospitalization rates among immunocompromised patients, including patients with juvenile idiopathic arthritis (JIA). Although vaccination is an effective tool against pandemic flu complications, there are no studies in the literature on its effects in JIA. Objectives: To assess the immune response against the influenza A H1N1/2009 vaccine without adjuvant in JIA as an extension of previous observation of its immunogenicity and safety in a large population of patients with juvenile rheumatic diseases. Moreover to assess the possible influence of demographic data, subtypes of JIA, disease activity and treatment on the immunogenicity and the potential deleterious effect of vaccine on disease itself, particularly on the number of active joints and inflammatory markers. Methods: 95 JIA patients and 91 healthy controls were evaluated before and 21 days after vaccination against influenza A and serology for anti-H1N1 was performed by hemagglutination inhibition assay. The overall assessment of arthritis activity by a visual analogue scale (VAS) by patient and physician, the Childhood Health Assessment Questionnaire (CHAQ), the number of active joints, the acute phase reactants (ESR and CRP) and treatment were evaluated before and after vaccination. Adverse events were also reported. Results: JIA patients and controls were comparable regarding mean current age (14.9 ± 3.2 vs. 14.6 ± 3.7 years, p=0.182). After vaccination seroconversion rate was significantly lower in JIA patients compared to controls (83.2% vs. 95.6%, p=0.008), particularly in polyarticular subtype (80% vs. 95.6%, p=0.0098). JIA subtypes, number of active joints, acute phase reactants, patient and the physician VAS, CHAQ and frequency of use of DMARDs/Immunosuppressants were similar between patients with and without seroconversion (p>0.05). Regarding vaccine safety, no deterioration was observed in the number of active joints and the acute phase reactants during the study period. Conclusion: Influenza A H1N1/2009 vaccination in JIA induces a lower but effective antibody response, probably independent of disease parameters and treatment with an adequate disease safety profile.