History of flu outbreaks

POSTED: 09:47 AM PST Jan 10, 2013    UPDATED: 08:05 AM PST Dec 18, 2013 

The first human has died from the H10N8 avian flu virus, which has only been detected in birds until now. 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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