New research identifies which masks are most effective against coronavirus
02:39
Share this -
copied
Health officials agree that face masks can help slow the spread of the coronavirus, and now there’s new research on which types are most effective. Meanwhile, there is increasingly tense debate between those who wear them and those who don’t. NBC’s Sam Brock reports for TODAY from Miami.July 1, 2020
UP NEXT
Getting ‘hangry’ is a real feeling, new study shows
01:53
Behind the ‘bananas’ baseball league pitching up new ideas
04:36
Georgia Guidestones monument destroyed in predawn bombing
00:27
New omicron variant BA.5 accounts for 54% of US cases
00:34
Pat Cipollone, former Trump counsel, to testify before Jan. 6 panel
00:24
FBI, M15 give warning on China deploying network of spies