The latest coronavirus omicron subvariant— BA.2.75.— has doctors concerned about another surge in cases.
An advisory panel of the World Health Organization classified on Nov. 27, 2021, a worrying new COVID-19 variant first detected in South Africa as a highly transmissible virus of concern, naming it "Omicron" under its Greek letter system.
"It’s still really early on for us to draw too many conclusions," said Matthew Binnicker, director of clinical virology at the Mayo Clinic in Rochester, Minnesota. "But it does look like, especially in India, the rates of transmission are showing kind of that exponential increase." Whether it will outcompete BA.5, he said, is yet to be determined.
But experts say vaccines and boosters are still the best defense against severe COVID-19. In the fall it’s likely the U.S. will see updated formulations of the vaccine being developed that target more recent omicron strains. The World Health Organization said that coronavirus cases have tripled across Europe in the past six weeks, accounting for nearly half of all infections globally. Hospitalization rates have also doubled, although intensive care admissions have remained low.
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