VideoOmicron cases detected in UK, Germany and Italy

The U.S State Department and Centers for Disease Control and Prevention on Saturday advised against travel to eight southern African countries after the White House announced travel restrictions in response to a new COVID-19 variant.Omicron, dubbed a "variant of concern" by the World Health Organization, is potentially more contagious than previous variants of the disease. It could take weeks for scientists to fully understand the variant's mutations and whether existing vaccines and treatments