The C.D.C. updates its definition of ‘close contact’ in relation to infection risk.

https://ift.tt/2HnxUhx C.D.C. updates its definition of ‘close contact’ in relation to infection risk.

BY GINA KOLATA World
internal-essential
via Blogger https://ift.tt/31xhla2
October 22, 2020 at 06:04AM

Comments