Full CoverageWill omicron – the new coronavirus variant of concern – be more contagious than delta? A virus evolution expert explains what researchers know and what they don’t
By Suresh V. Kuchipudi
Top news
COVID vaccines less effective on Omicron, warns Moderna boss
Existing vaccines might not be as effective against omicron variant, Moderna CEO says
By Timothy Bella & Adela Suliman
Omicron variant was detected in the Netherlands before S. Africa flights
By Bart H. Meijer, Louise Heavens & Anthony Deutsch
Who’s in? Who’s out? The ethics of COVID-19 travel rules
By Nancy S. Jecker & Caesar A. Atuire
All coverage
Wealthy nations starved the developing world of vaccines. Omicron shows the cost of this greed
By Deborah Gleeson
Netherlands says omicron variant was within its borders a week before South African flights prompted panic
By Perry Stein
Omicron: What We Know About the Dominant Coronavirus Variant
By Andrew Jacobs, Emily Anthes & Carl Zimmer
WHO urges ‘rational’ measures against Omicron variant: Live news
By Usaid Siddiqui & Ted Regencia
‘The world is watching South Africa’: health experts sift Omicron clues
By Joseph Cotterill, John Burn-Murdoch & Oliver Barnes