The World Health Organization (WHO) recommended on May 18 that the next COVID-19 vaccines should no longer include the original SARS-CoV-2 viruswhich all existing vaccines currently doand instead contain a different version of the virus to better match circulating variants.Currently, this means a version of the virus from the XBB.1 family, which is now responsible for most of the new COVID-19 infections around the world.
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