After nearly 30 million infections and close to 550,000 deaths, the U.S. may be rounding a corner with lower cases and fatalities being recorded over the past few weeks. As vaccinations rise, can the U.S. achieve herd immunity against COVID? Health expert Dr. Kate Tulenko had this to say: Watch the whole discussion here: https://america.cgtn.com/2021/03/16/t... Watch CGTN LIVE on your computer, tablet or mobile http://america.cgtn.com/livenews Subscribe to CGTN America on YouTube Follow CGTN America: Twitter: @cgtnamerica Facebook: @cgtnamerica Instagram: @cgtnamerica TikTok: @cgtnamerica