U.S. President Joe Biden announced the opening of more federal vaccination and testing sites to tackle a surge in COVID-19 cases sparked by the Omicron variant, and said some 500 million at-home rapid tests will be available to Americans for free starting in January. #Biden #COVID #Omicron #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en