Respiratory viral coinfection among hospitalized patients with H1N1 2009 during the first pandemic wave in Brazil

Authors Clarice Camargo; Sandra Baltazar Guatura; Nancy Bellei

Keywords: Influenza A H1N1 2009; Influenza coinfection; Respiratory infections

Abstract:
Influenza A coinfections with other respiratory viruses were investigated in 25.8% (41/159) of the samples from patients hospitalized in 2009 at our University Hospital. Out of the 41 influenza A cases, nine cases (21.9%) were coinfected with other viruses, with a similar frequency among children and adults (p = 0.47), and seasonal influenza cases were more prevalent than H1N1 2009 influenza virus. Adenovirus was the most frequently detected (4/9) among coinfected cases. Coinfection was not associated with higher morbidity or mortality (p = 0.75).

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