By Jane Greenhalgh | NPR | 1 month 4 weeks ago | Discovery
When the state of Kansas issued a mask mandate, 81 counties opted out. Researchers found coronavirus infection rates rose sharply in the opt-out counties, while falling in those that required masks. (Image credit: Ada daSilva/Getty Images)
RELATED LINKS
Discovery - 3 hours 21 minutes ago
Discovery - 1 day 4 hours ago
Discovery - 2 days 6 hours ago
Comments