Covid-19 vaccine may have unpleasant side effects. That will mean it’s working.

Covid-19 vaccine may have unpleasant side effects. That will mean it’s working. https://www.yahoo.com/news/covid-19-vaccine-may-unpleasant-100438136.html?guccounter=1&guce_referrer=aHR0cDovL20uZmFjZWJvb2suY29tLw&guce_referrer_sig=AQAAAFFtGSZvdzgmZOvodYQ1gUCqbvxobcrquj6FZ06lddA7JInVprCf_LBfYqWaXiOFbI00i8djegpSuAoJZncAP64r0LVgWKMnkCBaPKaUdqd9sojysgRL3T3NWKTSN3hjJ1OQ932Y7z7FYnKzgH_f2D1CLC5t36JH-APUoksS96z-