Vaccinations should continue as influenza pandemics epidemics wane, experts urge

Influenza pandemics often come in multiple waves. As the one wave subsides, public health officials have to decide whether continuing vaccination programs is warranted to prevent or reduce a subsequent wave. Researchers now report on a new computer model that can be used to predict both subsequent-wave mechanisms and vaccination effectiveness. They conclude that additional waves in an epidemic can be mitigated by vaccination even when an epidemic appears to be waning.

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