Vaccination lowers the chance of developing long Covid, according to a large new study that also found that the risk of serious complications has diminished but not disappeared as new coronavirus ...

The fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

Molnupiravir, an antiviral drug used to treat patients with COVID-19, appears to be driving SARS-CoV-2 to mutate and evolve, with some of these new viruses being transmitted onwards, a new study has ...

Experts say it's less risky to catch Covid-19 than it used to be, but there are still good reasons not to treat it casually. "At this point, the risk is lower because of our prior immunity, whether ...

One theory for the rapid leap in mutations in the Omicron variant is that the virus mutated in an immuno-suppressed person. But there are other possibilities too. "The virus is mutating all the time,” ...

Covid-19 was never just another cold. We knew it was going to stick around and keep changing to try to get the upper hand on our immune systems. But we've changed, too. Our B cells and T cells, ...

Another recent study out of Australia, of nearly 23,000 people with confirmed Covid-19 infections between July and August 2022, found that 18% of the more than 11,000 who responded met the case ...