• Joe Biden Formally Becomes Democratic Presidential Nominee; High Profile Republicans Show Up to Support Biden; Bill Clinton Tears into Trump on Night Two of Democrat National Convention; Virtual DNC ...

• Human Vaccine Trials Underway At Oxford University; South Korea Says North Korean Leader Kim Jong Un Alive And Well; Most of Germany Now Required To Wear Masks In Public. Aired 5:30-6a ET • U.S.

THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED. TONY HARRIS, CNN ANCHOR: The top of the hour here at CNN. You're looking at live pictures from Arlington National ...

• United Kingdom Starts its Vaccination Program; Healthcare Workers to Have the Vaccine First; U.S. Hits the Highest Coronavirus Death Toll; Healthcare Workers Pleas the Public to Obey Rules; Russia ...