WHO | Influenza (Seasonal) - 1 views
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zperrynist on 25 Sep 12Key facts Influenza is an acute viral infection that spreads easily from person to person. Influenza circulates worldwide and can affect anybody in any age group. Influenza causes annual epidemics that peak during winter in temperate regions. Influenza is a serious public health problem that causes severe illnesses and deaths for higher risk populations.
