Scientists say Omicron variant spreading twice as fast as Delta

Researchers looking into the Omicron variant say it appears to be spreading twice as fast as the Delta variant. Also in the programme: Voters are heading to the polls in The Gambia to choose a new president and in UK the first person to die of AIDS is chronicled in a television documentary. (Photo: A health worker tests passengers for coronavirus at Amsterdam Schiphol airport on December 2, 2021 in Amsterdam, Netherlands. Credit: Photo by Pierre Crom/Getty Images)