Biden visits CDC, concern grows over new COVID-19 variants
President Joe Biden traveled to the Centers for Disease Control and Prevention headquarters in Atlanta to celebrate the progress in ramping up vaccine distribution. The United States has officially surpassed administering 100 million doses of the vaccine during Mr. Biden's first 100 days in office. But as the pace of the vaccine rollout ramps up, concerns grow over new COVID-19 variants. Natalie Brand reports.