The Omicron virus variant will become the dominant variant in the United States, Dr. Anthony Fauci said Tuesday. “It is going to be dominant in the United States, given its doubling time,” Fauci told CNN. In some countries, the percent of COVID-19 cases that Omicron causes is doubling every two days, Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention (CDC), said on NBC’s “Today” show. Omicron is a variant of the CCP (Chinese Communist Party) virus, also known as SARS-CoV-2, which causes COVID-19. Omicron quickly became the dominant strain in South Africa, where scientists first identified the variant. Officials in European countries have said they expect Omicron to displace Delta within days. COVID-19 cases caused by the variant in the United States increased to nearly 3 percent in the week ending on Dec. 11, according to data collected by the CDC’s national genomic surveillance system published earlier in the …