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

Michelle's son went to a friend's house and came back with COVID-19, spreading it to others in his family, including his father, who's still in the ICU. She shares her message for those who refuse to wear masks with WebMD Chief Medical Officer Dr. John Whyte -- watch the full video here: https://wb.md/2ZWhDa7 | WebMD