Pandemic (H1N1) 2009, Shanghai, China

Abstract

To understand the clinical and epidemiologic characteristics of pandemic (H1N1) 2009 virus infection, we retrospectively reviewed medical records of 237 patients with laboratory-confirmed cases reported in Shanghai, China, during May–July 2009. Surveillance activities effectively contained the outbreak and provided useful epidemiologic data for future strategies.

Keywords

• Pandemic (H1N1) 2009
• influenza
• human influenza
• epidemiology
• viruses
• respiratory infections