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 ...

The “cicada” SARS-CoV-2 variant, which earned its nickname after staying relatively dormant following its discovery in 2024, has accounted for a small proportion of COVID-19 cases since the CDC began ...

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 vaccine effectiveness.

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 ...

For many people, the COVID-19 pandemic feels like a distant memory. In reality, the SARS‑CoV‑2 coronavirus is still spreading widely across the globe and continues to evolve into new variants.