Coronavirus

You have full access to this article via your institution. Prolonged exposure in close proximity to someone with COVID-19 puts people at high risk of catching the disease, even if they’ve had both the disease and vaccinations against it, a study1 shows.

At Yale’s clinic, medical sleuth Lisa Sanders is trying almost everything. This article was featured in One Great Story, New York’s reading recommendation newsletter. Sign up here to get it nightly. Lisa Sanders was at a large birthday party in New Haven in June 2022.

If the COVID-19 pandemic has done one thing, it’s made us all more familiar with some of the important players in the immune system. Antibodies, B cells, and T cells are among the best known parts of the body’s response to a virus like SARS-CoV-2, but they don’t act alone.

A new Covid-19 variant has entered the scene, becoming the most prevalent strain in the U.S. However, it may not be as dangerous as the ones that came before. The new variant, Eris (formerly called EG.

The virus is surging again. Here’s how to be your own contact tracer if you get sick.