Covid Booster and Omicron: Who Should Get the Shot Now?

A recent study Evaluation of the bivalent booster in people over 12 years of age has shown that it works equally well in all age groups. Researchers compared how people performed three months after receiving a monovalent booster (May to August 2022) with three months after receiving a bivalent booster (September to December 2022). They found that the monovalent booster was 25 percent effective in preventing hospitalization or death, while the bivalent booster was 62 percent effective.

While the booster may work for everyone, experts say adults are more likely to benefit from hospitalization for Covid-19. “Although this effect is similar, the increase in the elderly is even more important because their absolute risk is higher,” said Danyu Lin, professor of biostatistics at the University of North Carolina at Chapel Hill, who led the research.

A CDC study looks at the bivalent booster Protects against infection 18 to 49 year olds are also encouraged. Compared with those who received between two and four doses of the original vaccine, those who received a bipolar booster were about 50 percent less likely to develop symptomatic infection from BA.5 or XBB/XBB.1.5.

However, as with the original vaccine, the bivalent booster slightly increases the risk MyocarditisInflammation of the heart muscle, in 18- to 35-year-olds. As a result, some experts are reluctant to recommend higher stimulant doses for this group.

“If you’re young, say you’re 35, 40 years old, you’re healthy, you’re already vaccinated, you’re motivated, maybe you’ve had an infection or two in the past, and that person is pretty well protected for some time,” said Columbia, who led one of the antibody studies. Dr. David Ho, a professor of medicine at the university, said: “Until more data is available, I would not force such a person to get an annual vaccine.”

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For most Americans, the FDA recommends that the booster is enough Awarded annually In the fall, the flu vaccine is similar, and high-risk individuals can still receive multiple doses a year. It is unclear when, or if, this approach will be formally recommended.

Dr. Lin has not published research comparing outcomes by the number of booster doses people receive per year. His data showed that those who received less than one booster per year on average had higher hospitalization and death rates than those who received one or more doses. There is very little difference between one and more than one booster dose per year. He said this suggested an annual booster was sufficient for most people; However, for older adults, even a small benefit from multiple boosters per year may be beneficial.

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