Latestage vaccine study begins in U.S.
Johnson & Johnson is beginning a huge final study to try to prove whether a singledose COVID19 vaccine can protect against the virus.
The study starting Wednesday will be one of the largest coronavirus vaccine studies so far, testing in 60,000 volunteers in the U.S., South Africa, Argentina, Brazil, Chile, Colombia, Mexico and Peru.
A handful of other vaccines in the U.S. — including shots made by Moderna Inc. and Pfizer Inc. — and others in other countries are already in finalstage testing. Hopes are high that answers about at least one candidate being tested in the U.S. could come by year’s end, maybe sooner.
Dr. Anthony Fauci says by the end of this year government scientists should know whether they have a safe and effective vaccine.