CNN.com - RSS Channel - HP HeroFive takeaways on the science behind CDC's latest mask guidance

With surges in Covid-19 cases driven by the Delta variant, most Americans are now being advised to wear masks indoors -- regardless of vaccination status -- by the US Centers for Disease Control and Prevention.

July 31, 2021 at 01:37PM https://ift.tt/3rK59yI surges in Covid-19 cases driven by the Delta variant, most Americans are now being advised to wear masks indoors -- regardless of vaccination status -- by the US Centers for Disease Control and Prevention.