November 26 Omicron variant news
By Melissa Mahtani, Adrienne Vogt & Aditi Sangal
Belgium confirms case of new, heavily mutated Covid variant
By Robert Towey & Spencer Kimball
The hunt for coronavirus variants: how the new one was found and what we know so far
By Tulio de Oliveira, Jinal Bhiman & Cathrine Scheepers
WHO names new COVID variant omicron, cautions against travel measures
By Alexander Winning & Stephanie Nebehay
Omicron classified 'variant of concern' by WHO: COVID updates
By Michael James, Joel Shannon & Christine Fernando
COVID: What we know about the omicron variant
By Alexander Freund