Severity of H1N1 influenza linked to presence of Streptococcus pneumoniae

The presence of the Streptococcus pneumoniae in samples that can be easily obtained in clinics and emergency rooms may predict risk of severe disease in H1N1 pandemic influenza. Reports that H1N1 pandemic influenza in Argentina was associated with higher morbidity and mortality than in other countries led investigators in the Center for Infection and Immunity at the Mailman School of Public Health to look for viral mutations indicative of increased virulence and for co-infections that could contribute to disease.

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