Pfizer and Moderna vaccines 80% effective at preventing COVID-19 after one shot, CDC says

Previously, thevaccineswere shown to be effective inpreventing the symptomsofCOVID-19.

This study shows they help prevent people from contracting the coronavirus.

Biden had previously saidall adults in the US should be eligible for a vaccine by May 1.

Here’swhere to get a COVID-19 shotand how totrack how many vaccines are availablein your state.