Most experts say that the best, safest way to reach herd immunity is through a vaccine, and a more controversial way is through natural infection. WebMD Chief Medical Officer Dr. John Whyte explains how many Americans would have to be infected with, and recover from, COVID-19 for the U.S. to reach it: | WebMD

Even after you're fully vaccinated, should you still wear a mask and practice other COVID precautions? WebMD Chief Medical Officer Dr. John Whyte weighs in. | WebMD