FDA asks Covid-19 vac­cine mak­ers to in­stead tar­get KP.2 strain for fall sea­son

The FDA is di­rect­ing Covid-19 vac­cine man­u­fac­tur­ers to up­date their for­mu­la­tions to tar­get the KP.2 strain of the virus, cit­ing high­er cir­cu­la­tion lev­els of that …

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