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History of flu outbreaks

Published On: Jan 10 2013 11:47:55 AM CST

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.

Asian flu in Sweden 1957
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1957 – 1958 

In February 1957, a new flu virus was identified in the Far East. Immunity to this strain was rare in people younger than 65. Vaccine production began in late May 1957 and was available in limited supply by August 1957.

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