A joint WHO-China study on the origins of Covid-19 says the virus was probably transmitted from bats to humans through another animal, and that a lab leak was “extremely unlikely” as a cause, the Associated Press reported on March 29.

After months of urging the public to wear masks and facial coverings to help stop infected people from spreading Covid-19, the Centers for Disease Control and Prevention (CDC) stated in newly released guidance that masks also protected the mask wearer from being infected.