Pandemics and DiseasesWhat is it? A pandemic is a global disease outbreak. An influenza pandemic occurs when a new influenza virus emerges for which there is little or no immunity in the human population and the virus begins to cause serious illness and then spreads easily person-to-person worldwide. (Ready.gov) Learn More. Prepare | Respond | | For more information on Pandemic Influenza and Diseases please review these resources on PandemicFlu.gov |
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