LONDON — A newly-discovered mutation of the delta variant is being investigated in the U.K. amid worries that it could make the virus even more transmissible and undermine Covid-19 vaccines further.

Just when it felt like COVID had quietly slipped into the background of everyday life, a new variant is back in the headlines. Reports suggest this strain carries multiple spike protein mutations and ...

A COVID-19 strain carrying an unusually high number of mutations is drawing attention from public health officials as it turns up in wastewater samples, airport screenings, and nasal swabs across the ...

A newly identified COVID-19 variant is drawing attention from health officials after being detected in the U.S., though early evidence suggests it is not yet driving a surge in cases or severe illness ...

SAN FRANCISCO -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may cause ...

COVID Cicada variant BA.3.2 detected globally with 75 mutations, raising concerns over antibody evasion and possible reduced ...

Strain found in 29 states and Puerto Rico carries spike mutations, but no data shows increased severity ...

While the latest variant, called Cicada, carries more mutations, it’s still part of the Omicron family that emerged in 2021.