As more people get vaccinated, and cases drop further, it may become safe to do things...

Vaccine efficacy is a metric that measures how well cases of an infectious disease, like...

Johnson & Jonhson's coronavirus vaccine is the only one that's been broadly tested as...

"You can have the filtration of a surgical mask, and you can get a better fit by putting...

There's a more lab-tested, proven solution to getting a snug, secure, protective mask fit...

Vaccine-maker Kizzmekia Corbett, who helped develop Moderna's vaccine at the NIH, said...

Covid-19 shots from Pfizer and Moderna can carry side effects for a few days. They offer...

Your odds of having an allergic reaction in the minutes after receiving Moderna's vaccine...