Soon after U.S. regulators paused the use of the J&J single-dose vaccine, health authorities in many European countries and in South Africa announced that they were also putting it on hold.
Government health officials are recommending a "pause" in vaccinations with the Johnson & Johnson COVID-19 vaccine. We're answering your questions as we learn more.
COVID-19 can cause symptoms that go well beyond the lungs, from strokes to organ failure. To explain these widespread injuries, researchers are studying how the virus affects the vascular system.
Molecular diagnostics are at the frontier of medical science. But along with precise information about health, the tests raise billing questions that can create a minefield for patients.
The blood thinner warfarin, which prevents blood clots, owes its existence to some cows who got very sick after eating spoiled hay — and to a chemist who spent years trying to figure out why.
The candidate's physician says she is "healthy and fit to serve as President of the United States." She also takes thyroid medication and blood thinners.
A generation that survived life-threatening bleeds, the HIV epidemic and hepatitis C now nears retirement with an illness that can mostly be safely managed at home — for about $250,000 a year.
