Covid Booster and Omicron: Who Should Get a Shot Now? – The New York Times

by | Feb 2, 2023 | COVID-19

One recent study evaluating the bivalent booster in people over the age of 12 showed that it worked equally well in individuals of all ages. The researchers compared how people fared during the three months after they received a monovalent booster (May to August 2022) with the three months after people received a bivalent booster (September to December 2022). They found that the monovalent booster was 25 percent effective at preventing hospitalization or death, while the bivalent booster was 62 percent effective.Although the booster worked for everyone, experts say because older adults are much more likely to be hospitalized for Covid-19, they will experience a greater benefit. “Even if this effectiveness is the same, it’s still more important for older people to get boosted because their absolute risk is higher,” said Danyu Lin, a professor of biostatistics at the University of North Carolina at Chapel Hill who led the research.A C.D.C. study looking at whether the bivalent booster protects against infection in people aged 18 to 49 was also encouraging. Compared with people who received between two and four doses of the original vaccine, people who got the bivalent booster were roughly 50 percent less likely to have a symptomatic infection from either BA.5 or XBB/XBB.1.5.However, as with the original vaccine, the bivalent booster slightly increases the risk of myocarditis, inflammation of the heart muscle, in people aged 18 to 35. As a result, some experts are hesitant to recommend more booster doses to this group.“If you’re young, say you’re 35, 40, you’re otherwise healthy, yo …

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