April 6, 2022
The Omicron subvariant BA.2 is inflicting the lion’s share of COVID infections in the USA now, however thus far it hasn’t resulted in a surge of circumstances.
BA.2 accounted for 72% of circumstances final week, in keeping with the Facilities for Illness Management and Prevention, whereas the general quantity of circumstances has continued to fall. The seven-day every day common of COVID circumstances was round 25,000 on Tuesday, in comparison with round 44,000 on March 4 and round 312,000 on Feb. 4, the CDC says.
Some well being consultants say there might not be a surge from BA.2.
“I would not be hugely concerned about BA.2,” Christopher Murray, MD, a professor of well being metrics sciences on the College of Washington and the director of the Institute for Well being Metrics and Analysis, instructed NBC Information.
“Right now, we’re in this period where immunity is high and we’re heading into the summer and transmission tends to be a bit lower,” he mentioned. “The mixture ought to lead within the Northern Hemisphere to fairly low ranges after the BA.2 wave.”
Case counts jumped when the Delta and Omicron variants appeared, but that’s not happening with BA.2, Jessica Justman, MD, an epidemiologist at Columbia University’s Mailman School of Public Health, told CNN.
“That is a clear instance of how these two tendencies usually are not essentially tied collectively,” she said.
When documented COVID infections went up last month in Europe and other parts of the world because of BA.2, U.S. health experts worried the same thing could happen here. So far, it hasn’t.
Andy Pekosz, director of the Center for Emerging Viruses and Infectious Diseases at Johns Hopkins University, told CNN that the surge in European BA.2 cases occurred because those nations dropped many safety precautions when a lot of viruses were still circulating.
“What you are seeing in Europe could also be ensuing from the truth that they lifted their restrictions early, not a lot that it is BA.2 that is there,” he says.
CNN noted that it’s difficult to obtain accurate case counts now because so many people are using home testing kits and not reporting positive results to health departments.
“I feel there isn’t any query there’s underreporting of constructive circumstances,” Mara Aspinall, a professor at Arizona State College, instructed CNN.
Murray mentioned he’s apprehensive extra about a potential COVID surge within the fall, when immunity offered by boosters declines and leaves individuals susceptible, maybe to a model new subvariant.