<p style="text-align:start;" size="1" _root="[object Object]" __ownerid="undefined" __hash="undefined" __altered="false">People who have been fully inoculated against coronavirus with the Pfizer-BioNTech and Moderna vaccines may need a booster shot within a year in order to maintain immunity against coronavirus, though other experts say a booster may be necessary as soon as six months after.</p>
