Drug company workers, government officials and others have been injected outside the usual testing process. More will be soon, bewildering experts who worry about potential ill effects.
We may not find out whether the vaccines prevent moderate or severe cases of Covid-19.
The company said tests of its vaccine would start up again in Britain while remaining suspended in the U.S. and other countries. Pfizer, a competitor, announced an expansion of its trials.
New details of how the president has demanded faster action from health agencies help explain the intensifying concern that he could demand pre-Election Day approval of a vaccine.
Dozens of research groups around the world are playing the long game, convinced that their experimental vaccines will be cheaper and more powerful than the ones leading the race today.
How much freedom should front-line clinicians have in treating Covid-19 patients with unproven drugs? The question opened up a civil war in some hospitals.
The world’s largest vaccine producer, the Serum Institute, announced a plan to make hundreds of millions of doses of an unproven inoculation. It’s a gamble with a huge upside. And huge risks.
Scientists say such tests could be available in a few years, speeding research for treatments and providing a diagnosis for dementia patients who want to know if they have Alzheimer’s disease.
Dr. Sapan Desai, who supplied the data for two prominent and later retracted studies, is said to have a history of cutting corners and misrepresenting information in pursuit of his ambitions.
In Boston and in the Netherlands, scientists are racing to build a vaccine against the virus strangling the world.
The Maryland-based company, which has never brought a product to market before, just made the biggest deal to date with the Trump administration’s Operation Warp Speed.
Confronted by illnesses that most scientists overlook, these families had to work out their own approaches to find treatments.