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U.S. President Biden calls for intellectual property protection waivers after Omicron discovery
By Nandita Bose, Heather Timmons & Lucia Mutikani
What to know about the omicron variant and subvariant BA.2
By Joel Achenbach, Meryl Kornfield & Lindsey Bever
What's known and unknown about Omicron, the coronavirus variant identified in South Africa
By Andrew Joseph
Biden admin announces travel ban for South Africa and 7 other countries, citing new variant
By Myah Ward
What to know about omicron, the new COVID variant
By Michaeleen Doucleff
Omicron: What we know about Covid strain prompting fresh global restrictions
By Clive Cookson & Oliver Barnes
U.S. imposes travel ban from eight African countries over Omicron variant
By Nandita Bose & David Shepardson
South Africa health minister says travel bans are 'unjustified,' as world reacts to new Covid variant
By Annika Kim Constantino
WHO labels new Covid strain, named omicron, a 'variant of concern,' citing possible increased reinfection risk
By Robert Towey & Sam Meredith
U.S. to restrict travel from South Africa, 7 other countries as new Covid variant emerges
By Leslie Josephs & Christina Wilkie