The Omicron variant is forecasted to infect more than half of all Europeans in the next six to eight weeks, a World Health Organization official said Tuesday as he urged nations to strengthen mask rules and warned that the window to act was closing.
The Omicron variant is forecasted to infect more than half of all Europeans in the next six to eight weeks, a World Health Organization official said Tuesday as he urged nations to strengthen mask rules and warned that the window to act was closing.