“Like herd immunity with vaccines, the more individuals wear cloth face coverings in public places where they may be close together, the more the entire community is protected,” Robert Redfield, director of the Centers for Disease Control and Prevention, and two colleagues wrote in an editorial in the Journal of the American Medical Association, also published on Tuesday. Because cloth face coverings can also allow states to more safely ease stay-at-home orders and business closings, Redfield told a JAMA Live webcast Tuesday, “If we could get everybody to wear a mask right now, I really think in the next four, six, eight weeks, we could bring this epidemic under control.”