What level of antibodies protect against COVID-19? Researchers are rushing to find out
What level of antibodies protect against COVID-19? Researchers are rushing to find out Elizabeth Weise, USA TODAY Replay Video UP NEXT To prove their COVID-19 vaccines worked, companies had to enroll more than 100,000 participants in monthslong clinical trials. Next time, Peter Gilbert wants such tests to require only a few hundred people and eight weeks' time. To get there, Gilbert and others have to figure out how much protection people need to avoid hospitalization and death from COVID-19, or even to prevent getting infected at all. But 15 months after COVID-19 shut down m...