A variant of COVID-19 called BA.3.2, which has circulated under the radar since late 2024, is now spreading quickly across ...

A new COVID-19 variant that some have dubbed the "Cicada" variant is quietly spreading across the globe, carrying an unusually high number of mutations that could help it slip past existing immunity, ...

Infections of the BA.3.2 variant of the COVID-causing coronavirus are still at very low levels, but experts are concerned it ...

Long COVID remains a frustrating medical mystery, affecting up to 1 in 10 people long after the initial infection fades. Now, scientists have uncovered a crucial clue hidden deep within the immune ...

Add Yahoo as a preferred source to see more of our stories on Google. Cells containing the novel coronavirus Sars-CoV-2 seen through a microscope (AFP via Getty) Cells infected with the Covid-19 virus ...

Older adults are much more likely to become seriously ill from flu or COVID because aging lung cells can drive excessive immune responses, according to a new study led by researchers at UC San ...