The Covid-19 vaccine developed by Novavax showed an overall efficacy of 90.4% against symptomatic cases of the disease, according to Phase 3 trial results—but the company said it won't immediately seek FDA authorization in the United States.

Nearly 10% of Covid-19 patients are estimated to experience long-term symptoms, a condition called "long Covid"—but there is still much experts don't know about the condition. Reporting for Nature, Michael Marshall rounds up the four biggest questions experts still have about long Covid.

After a patient lost his ability to conjure images in his mind, a phenomenon commonly referred to as having a "mind's eye," following heart surgery, one of his providers began exploring the condition—including whether it could be treated, or whether it even qualifies as a condition meriting treatment, Carl Zimmer reports for the New York Times.

How a dental visit changed a woman's life, what a renowned surgeon learned when he almost died from Covid-19, and more.

HHS Secretary Xavier Becerra on Wednesday sent a letter to health insurers and providers warning they should not bill patients for Covid-19 vaccines or tests, in today's bite-sized hospital and health industry news from the District of Columbia, Missouri, and Pennsylvania.