Influenza and Other Respiratory Viruses Annual Report 2009‐2010 Iowa Influenza Surveillance Network, August 30, 2010

(2010) Influenza and Other Respiratory Viruses Annual Report 2009‐2010 Iowa Influenza Surveillance Network, August 30, 2010. Public Health, Department of (Health and Human Services, Department of)

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Abstract

The 2009‐2010 influenza season was the most active and challenging in the history of the Iowa Influenza Surveillance Network. The year brought the first pandemic in more than 30 years. The pandemic had a significant impact and two waves of illness occurred in 2009. The largest wave peaked in late October with very little seasonal influenza activity following. IDPH added surveillance partners and the State Hygienic Laboratory (SHL) increased testing efforts while balancing the need for surveillance with capacity constraints. In 2009‐2010, SHL tested more than 2,300 specimens for 2009 H1N1 by PCR and 2,800 by culture, detected a triple reassortant strain, and confirmed the presence of a handful of seasonal influenza B cases.