CHICAGO — The record-shattering COVID surge has proven new variants like omicron can quickly throw the public health response off balance. It’s why scientists around the world are digging deep into ...
The virus that causes COVID-19 is accumulating genetic mutations, one of which may have made it more contagious. The number of virus strains present in each zip code in Houston during the second wave ...
STATEN ISLAND, N.Y. — A new group of highly transmissible coronavirus (COVID-19) variants are taking hold in the United States, according to the Centers for Disease Control and Prevention (CDC). The ...
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