Tag: strains

Watch out for four emerging variants of coronavirus, warn health experts

(This story originally appeared in on Jun 28, 2021) Health experts have called for strong surveillance on four emerging coronavirus variants, apart from the Delta-plus...

First Confirmed U.S. Cases of COVID Reinfections

Oct. 12, 2020 — A 25-year-old man from Nevada and a 42-year-old man in Virginia experienced second bouts of COVID-19 about 2 months after they...