A person has a Covid-19 test administered at a walk up testing site on December 15, 2021 in New York City. The fast-spreading Omicron variant is now the dominant strain of Covid-19 in the United States. PHOTO | AFP
The fast-spreading Omicron variant is now the dominant strain of Covid-19 in the United States, health authorities reported Monday, as the WHO called for greater efforts to ensure the pandemic ends next year.
