Microsoft co-founder Bill Gates has warned against the rising Omicron cases around the world, saying that the world could be entering the worst part of the pandemic as the variant will result in the "worst surge" the world has seen so far.

In a series of tweets, Bill Gates said he has cancelled most of his holiday plans after his close friends have been infected with the Omicron variant. "Omicron is spreading faster than any virus in history. It will soon be in every country in the world," he said. Noting that the "big unknown" is how lethal the variant is, Gates claimed: "Even if it's only half as severe as delta, it will be the worst surge we have seen so far because it's so infectious."