Flu vaccines prevented millions of deaths--history and study

Flu vaccines have prevented millions of deaths, research shows The 1918 Spanish flu pandemic was caused by a particularly virulent strain of influenza virus. It infected 500 million people, caused around 50 million deaths, and its impact was so severe that global ... Medical Xpress

...In terms of its effectiveness in preventing deaths, our analysis of the data shows that influenza vaccination is able to reduce infection-associated mortality by half overall, including H3N2 infections.

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