JAN 05 2007

Pandemics

Pandemics

A pandemic can start when three conditions have been met– (1) a new influenza virus subtype emerges, (2) it infects humans, causing serious illness, and (3) it spreads easily and sustainably among humans. For example, the H5N1 avian flu virus meets the first two conditions: it is a new virus for humans, and it has…

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