Roxanne Khamsi

“Carriers” of certain genetic diseases, who have just one affected gene, can have symptoms too.

Rare but dangerous blood clotting associated with that vaccine as well as AstraZeneca’s had a genetic cause, according to a new paper.

The next wave of obesity drugs is pushing the limits of weight loss.

Treating clean indoor air as a public good would have protected Americans against more than COVID-19.

But they were always at risk of developing diseases with potentially severe effects.

A lifelong promoter of vaccines suspects he might be the rare, unfortunate exception.

Testing for immune-system changes, rather than for the presence of a virus, could give an earlier indication of whether people are ill.

It’s becoming clear that “coinfections” happen all the time. Just how bad are they?

For months we’ve been fixated on the idea that some people are at “high risk” and others aren’t. Now scientists have a better understanding of the continuum.

Doctors have found a concerning link between the rare pediatric complication known as MIS-C and a syndrome related to tampon use.