September 21 coronavirus news
By Amy Woodyatt, Melissa Macaya & Jessie Yeung
CDC director says face masks may offer more protection against COVID than a vaccine. Here's what other experts say.
By Caitlin O'Kane
CDC Virus Testing Guidance Was Posted Against Scientists’ Objections
By Apoorva Mandavilli
Trump contradicts health advisers on coronavirus vaccine timetable as death toll mounts
By Lena Sun & Anne Gearan