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Africa steps up Omicron variant detection as COVID-19 cases rise in southern Africa
Exclusive: U.S. to extend transit mask mandate through mid-March - sources
By David Shepardson
California confirms first case of Omicron coronavirus variant
By Rong-Gong Lin II, Luke Money & maura dolan
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CDC confirms first U.S. case of omicron Covid variant has been detected in California
By Spencer Kimball, Jessica Bursztynsky & Dawn Kopecki
COVID-19 in Africa: Why More Vaccines Won’t Stop Omicron
By Chad de Guzman
Biden outlines expanded effort to combat Covid amid rising cases, omicron variant
By Lauren Egan, Shannon Pettypiece & Heidi Przybyla
How South African scientists discovered Omicron and set off a global chain reaction
By David McKenzie & Tim Lister
Biden outlines new steps to combat Covid through winter months
By Donald Judd & Kevin Liptak
This map shows where the Covid omicron variant has been detected
By Nee Lee & Yen Nee Lee