The World Health Organization (WHO) on Friday recommended scrapping a common component of seasonal flu vaccines that protects against a particular strain of the virus because that strain appears to no longer exist. Influenza viruses of the B/Yamagata line have not been detected since March 2020, when it spread around the world...
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The World Health Organization (WHO) on Friday recommended scrapping a common component of seasonal flu vaccines that protects against a particular strain of the virus because that strain appears to no longer exist. Influenza viruses of the B/Yamagata line have not been detected since March 2020, when it spread around the world...