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President Biden said South Africa has turned down vaccine doses. But the issue is more complicated than that.
By Lesley Wroughton & Yasmeen Abutaleb
Do Current COVID-19 Tests Still Detect Omicron?
By Alice Park
Omicron travel bans harming global cooperation, WHO warns
By Usaid Siddiqui & Farah Najjar
Omicron Risks Infecting Vaccinated People but May Not Cause Them Severe Illness - WSJ
By Bojan Pancevski
BioNTech CEO says vaccine likely to protect against severe COVID from Omicron
By Ludwig Burger & Patricia Weiss
When did Omicron Covid variant arrive in UK and is it spreading?
By Nicola Davis, Libby Brooks & Ian Sample
Omicron: How do I know if I have it?
By Philippa Roxby