Why the C.D.C. Changed Its Advice on Masks
Two scientific findings altered the calculus: Vaccinated people don’t transmit the virus, and the shots are effective against variants.
by ·
Two scientific findings altered the calculus: Vaccinated people don’t transmit the virus, and the shots are effective against variants.
by · Published May 9, 2021
by · Published May 27, 2021
by · Published May 31, 2021