“Swaminathan, chief scientist @WHO, believes an
optimistic scenario is a #vaccine produced in the ‘tens of millions’ next year…mainly distr’ed to hlthcare workrs & far larger volumes in 2022. To inoculate the world & defeat #Covid19 cld take 4 to 5 yrs.”https://t.co/fs0I8RFNBi— Laurie Garrett (@Laurie_Garrett) May 23, 2020