New data for the bivalent COVID-19 booster shot shows that it cuts the risk in half for symptomatic infection from the now predominant Omicron subvariant, XBB.1.5.
from the CDC are the first to show how well the bivalent booster works in the XBB.1.5 era, since the booster was developed before the strain first came about.
"With this data, we see there is a benefit that might convince some people to sign up and get a bivalent booster," Peter Hotez, MD, PhD, told. Hotez is a vaccine expert and dean of the National School of Tropical Medicine at the Baylor College of Medicine in Houston. About 15% of people in the U.S. have gotten the bivalent booster since it became available last fall. The term"bivalent" means the booster was developed to address both the original virus and the more recent version of the virus known as Omicron.
The new analysis from the CDC looked at 29,175 cases of people reporting COVID-like symptoms from a national pharmacy testing data set spanning Dec. 1, 2022, to Jan. 13, 2023. Overall, 34% of people who tested negative reported having received the bivalent booster. Among people who tested positive for XBB.1.5, 21% said they had gotten the bivalent booster.
NBC News: “Updated Covid boosters cut the infection risk from XBB.1.5 subvariant by nearly half, CDC finds.”
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