WHO: Switch 2 of 3 strains in 2015 flu vaccine

Robert Roos | News Editor | CIDRAP NewsSep 26, 2014Signs of antigenic drift led the WHO to changing two of the vaccine's strains for the Southern Hemisphere.Share Tweet Email Print & PDF
Sep 26, 2014

Signs of antigenic drift led the WHO to changing two of the vaccine’s strains for the Southern Hemisphere.

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