Internal CDC Document Sounds Alarm On Variant's Threat; China Scrambles To Contain Growing Outbreak In Nanjing; Bhutan Vaccinates 90 Percent Of Eligible Adults; Japan Extends State Of Emergency As Cases Climb; U.N.: 400,000 People On Verge Of Famine In Tigray; Scarlett Johansson Suing Disney Over 'Black Widow' Release'; South Africa's Schoenmaker Wins Gold In Record Fashion; Matty Lee Celebrates Diving Gold; G.B.'s Bethany Shriever Wins BNX Racing Gold. Aired 10-11a ET

(COMMERCIAL BREAK) [10:00:20] BECKY ANDERSON, CNN ANCHOR: Chilling morning about how easily the Delta variant is spread. What we are learning from an internal U.S. CDC document. The mixed picture [...]