July 30, 2021 - PBS NewsHour full episode

Friday on the NewsHour, as new data from the Centers for Disease Control and Prevention exposes how infectious and dangerous the COVID variant of the coronavirus is, NewsHour discusses the science. Then, Afghan interpreters arrive on U.S. shores, finding safety after risking it all to help America during the war. And, China tightens its grip on Hong Kong by closing the border to prevent a mass exodus.