Changing guidance around COVID-19 vaccines, specifically, has been central to RFK Jr.'s run as health secretary. A judge just struck some of it down.

Adults with prepandemic respiratory conditions, including asthma, bronchitis, and recurrent upper respiratory infections, are significantly more likely to develop long COVID after a mild-to-moderate ...

As states grappled with confusion around vaccines, COVID-19 cases have continued to fluctuate nationwide. Some regions of the United States are experiencing "very high" COVID viral activity, according ...

A group of experts that advises the US Centers for Disease Control and Prevention on its vaccine recommendations has suspended an anticipated push to stop recommending mRNA-based Covid-19 vaccines ...

But for more than five years, she’s been trapped in her Ontario home, hooked up to oxygen. “It’s lonely. I lay down all day, ...

Human metapneumovirus, or HMPV, typically spreads during winter and spring.