Researchers tested 14 types of masks. Here’s what they learned

researchers-tested-14-types-of-masks.-here’s-what-they-learned

CNN’s Brian Todd reports on new guidance from the Centers for Disease Control and Prevention about masks and how they help prevent the spread of Covid-19.

Times2 Desk
Latest News Headlines: Times2 covers Latest India News, Top Today's Breaking News on Business, India, World, Politics, Entertainment and Sports …