An additional booster dose of COVID vaccine helped substantially reduce the rate of infection in nursing home residents during the Omicron wave compared with a primary series alone, researchers found.
... research shows antibodies obtained from vaccination or infection gradually wane over time, and each new omicron subvariant, though still a part of the larger omicron family tree, is slightly different from the last, meaning a person's ability to fight off infections from the virus can shift.
There is a real danger of another international COVID wave this summer, with the Delta variant possibly poised to make a comeback, new Israeli research suggests.
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