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Caracterización epidemiológica y clínica de la infección por influenza A (H1N1) 2009 en San Felipe, Región de Valparaíso, Chile: Junio a agosto 2009

2012; SciELO; Volume: 29; Issue: 4 Linguagem: Inglês

10.4067/s0716-10182012000400003

0717-6341

Maritza García, Elena Pedroni, Claudia González, Andrea Olea, Carmen Castillo, Claudia Cameratti, Natalia Vergara, Rodrigo Fasce,

Chronic Obstructive Pulmonary Disease (COPD) Research

In order to understand the clinical and epidemiological aspects of infection with the AH1N1 infl uenza virus in Chile, a prospective study in the city of San Felipe was undertaken.It analyses the trends in consultations for respiratory causes in three primary care centers and hospital discharges by comparing data from years 2008 and 2009 until epidemiological week 37.It also includes a study of cases of ILI / SARI (infl uenza like disease/severe acute respiratory disease) in which viruses were detected by direct immunofl uorescence (DIF) of nasopharyngeal aspirates and by real-time polymerase chain reaction in the case of infl uenza A (H1N1) 2009.A household survey was conducted in those cases with confi rmed A (H1N1) infection, to identify contacts and history related to infl uenza virus transmission.The results indicate that the behavior of the pandemic was similar to that observed in the rest of the country, with an increase in emergency room visits for ILI.The most affected age group was from 5 to 14 years (26.5 per thousand inhabitants) and the least affected 60 years or older (1.2 per thousand).A 2.78% of the cases corresponded to SARI and the fatality rate was 0.11%.