Covid-19 Immunity Shows Positive Signs, But Not Proven: Johns Hopkins

May.18 — Masks are the “icing on the cake” of social distancing, says Johns Hopkins Vice Dean for Public Health Practice Josh Sharfstein, as he discusses positive signs of evidence of coronavirus immunity. He speaks on “Bloomberg Surveillance.” The Bloomberg School of Public Health is supported by Michael R. Bloomberg, founder and majority owner of Bloomberg LP, the parent company of Bloomberg News.