History of flu outbreaks

POSTED: 09:47 AM PST Jan 10, 2013 

The flu season is in full swing and reported cases are spreading quickly throughout the U.S. Take a look at history's four main flu outbreaks.

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iStock/Andresr

Most influenza–and pneumonia–related deaths occurred between September 1957 and March 1958. Although the 1957 pandemic was not as devastating as the 1918 pandemic, about 69,800 people in the United States died. The elderly had the highest rates of death.

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