BA.2 and its offshoot account for majority of U.S. cases, as travel mask mandate is lifted

April 20th, 20220 With the mutations of Omicron now making up more than 90 percent of COVID-19 cases in the U.S., travelers in the country were suddenly informed that a court order had blocked the Biden administration’s mask mandate on public transportation this week. That ruling from a federal judge on Monday came as COVID-19 infections are...