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Lung tissue study sheds light on fast Omicron spread
By Lisa Schnirring
Omicron more likely to reinfect than Delta, no milder -study
By Clara-Læïla Laudette
What makes omicron spread so quickly? A new study offers a tantalizing clue : Goats and Soda
By Michaeleen Doucleff
Omicron symptoms could seem like a cold — but don't underestimate this variant, experts warn
By Holly Ellyatt
Omicron: What can we learn from South Africa's experience so far?
By Rachel Schraer & Peter Mwai
Could humanity catch a break with Omicron?
By Melissa Healy
Omicron variant: What we know — and don't know
By Denise Chow
What We Know About the COVID-19 Omicron Variant
By Ashley Abramson
S.Africa reports record daily COVID-19 cases as Omicron spreads
By Alexander Winning & Mark Heinrich