In the United States, the FDA has granted emergency authorization for use of the experimental antibody treatment Regeneron, to treat mild to moderate COVID-19 patients.
Regeneron is the drug given to President Trump when he was infected.
It'll be made available to patients 12 and older, including senior citizens.
Meanwhile, the CDC says the virus is now being spread by people who develop no symptoms in 24 percent of cases.
Similarly, in one third of cases, the virus is transmitted before symptoms appear.
The agency underlined the importance of wearing masks, saying even cloth masks can prevent people from inhaling droplets carrying the virus.
The US is seeing a rapid surge in new cases the total now surpassing 12 million.
That's another million cases in less than a week.
There were nearly 200 thousand reported on Friday, which is the highest for a single day so far.
On Saturday, White House coronavirus task force member Dr. Deborah Birx expressed her concerns that rate of increase is now dramatically faster and broader.