The new variant poses a far graver threat at the collective level than the individual one—the kind of test that the U.S. has repeatedly failed.
Small errors incorporated into the genome when a pathogen copies itself offer clues to reconstruct chains of transmission and learn about epidemic dynamics along the way.
The variant contains a mutation thought to help the virus dodge the immune system, scientists said.
A South African tip led to the discovery of mutations around the world. With infections skyrocketing, “it’s a race against time.”
President Cyril Ramaphosa expected to announce new restrictions in attempt to slow the surge
Gut dwellers signal immune cells to stay calm and dial down inflammation.
Spread the word