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The association of influenza vaccination with Influenza-like illness among adults aged 65 years and older in the United States
Content Type: Abstract
After the 2009 H1N1 influenza pandemic, CDC initiated community-based surveillance of self-reported influenza-like illness (ILI)[1], defined as the presence of fever with cough or sore throat. Although ILI is frequently attributed to other pathogens… read more