People traveling from the United Kingdom to the United States now have to show proof of a recent negative COVID-19 test. The goal is to keep out a new and more infectious strain of the coronavirus showing up in the U.K. Robert Handa reports. Stay connected: Follow us on Twitter: / nbcbayarea Like us on Facebook: / nbcbayarea Follow us on Instagram: / nbcbayarea Add us on Snapchat @NBCBayArea Catch up on all the day's news: http://www.nbcbayarea.com Download our app: On iOS: http://nbcbay.com/R1BhqYM On Android: http://nbcbay.com/rUcA97h