IE 11 is not supported. For an optimal experience visit our site on another browser.

Israel adds Covid restrictions as delta variant fuels surge

01:13

Masks are back on in Israel in an effort to contain a Covid-19 surge. The delta variant makes up about 90 percent of the new cases there. Delta accounts for 95 percent of new cases in the U.K., and around 20 percent of cases in the U.S. NBC News’ Molly Hunter looks at how the variant might affect the world.