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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
When did Omicron Covid variant arrive in UK and is it spreading?
By Nicola Davis, Libby Brooks & Ian Sample
Omicron travel bans harming global cooperation, WHO warns
By Usaid Siddiqui & Farah Najjar
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Some Teenagers Under 18 Could Soon Get A Pfizer COVID-19 Booster Shot : Shots - Health News
By Will Stone
Do Current COVID-19 Tests Still Detect Omicron?
By Alice Park
BioNTech CEO says vaccine likely to protect against severe COVID from Omicron
By Ludwig Burger & Patricia Weiss
Omicron: How do I know if I have it?
By Philippa Roxby