In 2010, 96 patients suspected of being infected with the influenza A (H1N1) virus were hospitalized at the Hospital São Paulo, located in the city of São Paulo, Brazil. Of those 96 patients, 4 (4.2%) were found to be infected with influenza A virus-3 with influenza A (H1N1) and 1 with seasonal influenza A-and 2 patients (2.1%) were found to be infected with influenza B virus. Most (63.5%) of the suspected cases occurred in children, as did half of the positive cases. The second wave of influenza A (H1N1) infection was weaker in São Paulo. The decrease in the number of hospitalizations for H1N1 infection in 2010 might be attributable to vaccination.
CITATION STYLE
Melchior, T. B., Guatura, S. B., Camargo, C. N., Watanabe, A. S. A., Granato, C., & Bellei, N. (2011). Occurrence of influenza among patients hospitalized for suspicion of influenza A (H1N1) infection in 2010 at a sentinel hospital in São Paulo, Brazil. Jornal Brasileiro de Pneumologia, 37(5), 655–658. https://doi.org/10.1590/s1806-37132011000500013
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