IE 11 is not supported. For an optimal experience visit our site on another browser.
We apologize, this video has expired.

Labor Day brings new concerns about coronavirus resurgence in the fall


Top U.S. officials are urging Americans to observe social distancing during Labor Day weekend, or risk kick-starting coronavirus infections in the fall. Meanwhile, researchers at Oxford University have teamed with pharmaceutical giant AstraZeneca to carry out Phase 3 clinical trials of a possible coronavirus vaccine in the U.S. starting Wednesday. NBC national correspondent Miguel Almaguer reports for TODAY.