The new coronavirus variant Omicron has now reached 48 countries as of December 5, 2021, less than 2 weeks after it was first reported in South Africa. A corporate Christmas party in Norway on November 26 has become the biggest outbreak outside South Africa. At least half of the 120 participants tested positive, even though all of them were fully vaccinated and had tested negative before the event. Preliminary studies suggest that Omicron is spreading twice as quickly as the Delta variant,…