Epidemiology of Influenza Virus Types and Subtypes in South Africa, 2009โ20121
Epidemiology of Influenza Virus Types and Subtypes in South Africa, 2009โ20121
Abstract To determine clinical and epidemiologic differences between influenza caused by different virus types and subtypes, we identified patients and tested specimens. Patients were children and adults hospitalized with confirmed influenza and severe acute respiratory illness (SARI) identified through active, prospective, hospital-based surveillance from 2009โ2012 in South Africa. Respiratory specimens โฆ