AdvertisementWithout A Vaccine, Researchers Say, Herd Immunity May Never Be AchievedJuly 24, 2020Geoff BrumfielfacebookEmailPublic health officials advise social distancing strategies and masks, in part because the latest evidence suggests that catching the coronavirus, even if you're young, is risky business. A significant portion of COVID-19 survivors suffer fatigue, blood clots, fevers and other symptoms for weeks and months after clearing the infection. (AFP via Getty Images)