The Omicron Covid-19 variant has been detected in 77 countries since it was first identified three weeks ago, fueling concerns that its large number of mutations will help it spread faster and evade protection provided by vaccines or prior infection.
Scientists await answers to these important questions: Is it more contagious? The fast-spreading Delta variant remains dominant worldwide, and it is unclear whether Omicron is inherently more contagious than its predecessor, the World Health Organization (WHO) said in a brief issued on Sunday.
Early data suggests that the new variant is spreading faster than previous versions of the virus. In South Africa, the UK and Denmark, the number of new Omicron infections has been doubling every two days