Cases of the COVID-19 variant Omicron BA.2.86, also known as Pirola, have tripled in two weeks, comprising between 5% and 15% of all infections, according to the Centers for Disease Control and ...

Moderna on Tuesday released preliminary data indicating its vaccine is likely to hold up against several variants of concern, including the Delta variant, which is predicted to become the dominant ...

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.

New coronavirus variants dubbed “FLiRT” are circulating the world and growing dominant in the U.S., and although cases and deaths are on a decline, some experts worry these variants may cause a summer ...

A new Covid variant has become dominant in the U.S., but relatively few people have thus far gotten the new shots that could offer some protection against it. The variant, called HV.1, replaced EG.5 ...

A REPORT on a four year old study in Dar es Salaam Region has shown that original Covid-19 vaccines had reduced effectiveness ...