With three coronavirus vaccines already approved for emergency use authorization in the U.S., how do the different available shots compare? Pfizer and Moderna's COVID vaccines have been available in ...

Despite a U.S. factory mixup, more Johnson & Johnson doses are becoming available in the U.S., marking the only single-shot vaccine option. So how effective is it and how does it compare to the Pfizer ...

Despite a U.S. factory mixup, more Johnson & Johnson doses are becoming available in the U.S., marking the only single-shot vaccine option. So how effective is it and how does it compare to the Pfizer ...

WASHINGTON — The U.S. will likely begin distributing a third vaccine against COVID-19 in the next week, and health officials are girding for questions about which one is best. The Johnson & Johnson ...

After some 200 companies world-wide set out earlier this year to produce a Covid-19 vaccine, the U.S. Food and Drug Administration authorized use in the U.S. of the vaccine from Moderna Inc. —the ...

LOS ANGELES - Following the recent emergency approval by U.S. regulators for a coronavirus vaccine from Johnson & Johnson which contains a single-dose regimen, some medical experts are saying one dose ...

Leading vaccine makers Pfizer (NYSE:PFE) and Moderna (NASDAQ:MRNA) on Wednesday responded to President Donald Trump’s recent criticism that drug companies have yet to justify the success of their ...