The stem cells from the placenta used in this treatment are "natural killer" cells that guard a developing fetus or newborn from viruses in the mother....

Masks cut the growth rate in deaths by as much as 10%. That was above and beyond the impact of other policies like closings schools and workplaces and issuing stay-at-home orders....

TIME shares stories of the remarkable lives led by some of those lost to COVID-19...

TIME crunched the data to show how COVID-19 will play out in various states across the U.S. based on current projections....

COVID-19 can cause a pneumonia-like lung infection, with a range of symptoms from mild or absent in some to life-threatening in others....

A roundup of the latest news about COVID-19...

It took about five days from the time patients were infected until symptoms appeared, and about eight days before they disappeared. Patients were contagious for one to eight...

Pregnant Women Need to Guard Against Coronavirus...

Researchers look at how people are infecting others with COVID-19 before they themselves have symptoms, or have no symptoms at all....

Employees with a temperature of over 100 degrees Fahrenheit will be sent home for at least three days and may be advised to seek medical treatment. The workers will be paid for...

France has four times as many deaths as Germany and Britain has twice as many, even though both countries have fewer reported infections....