Omicron, the New Covid-19 Variant: What to Know
By Denise Roland & Joanna Sugden
South African doctor who raised alarm about omicron variant says symptoms are 'unusual but mild'
By Peta Thornycroft & Will Brown
South Africa says it is being punished for early COVID variant detection
By Frances Kerry & Promit Mukherjee
The Omicron Variant: We Still Know Almost Nothing
By Katherine J. Wu