CDC report shows mounting evidence about dangerous delta variant; researchers study possible link between virus,

Earlier this week, the Centers for Disease Control and Prevention recommended that people in COVID-19 hotspots resume mask-wearing in indoor public spaces in regions with high coronavirus transmission.

https://www.usatoday.com/story/news/health/2021/07/30/covid-vaccine-variant-cdc-mask-hospitalization/5423606001/