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1957

 
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gs
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PostPosted: Sat Aug 08, 2009 6:56 am    Post subject: 1957 Reply with quote

vaccine in USA in 1957

Community outbreaks intensified when schools resumed in September,
but flu activity started leveling off by the end of November.
Schools had 20% to 30% absenteeism rates, but the pandemic had
little impact on work absenteeism except in schools and healthcare institutions.
Up to 25% of the US population was infected

Flu vaccine trials began in July 1957, with efficacy findings ranging from 53% to 60%.
From six domestic vaccine producers, 4 million doses were released in August,
9 million in September, and 17 million in October.
They produced enough to vaccinate about 17% of the US population.
The authors wrote that the vaccine apparently had little effect on the pandemic
because of limited availability and efficacy.

Henderson DA, Courtney B, Inglesby TV, et al. Public health and medical responses to the 1957-58 influenza pandemic.


1957 pandemic vaccine
30 million were vaccinated in 1957 in USA (pop=175M)
17 percent were vaccinated in USA in 1957
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