The third shot appears to broaden the ability of the immune system to recognize variants such as omicron.
that tracked infections and hospitalizations during December and January found that protection against hospitalization declined from 100 percent to 48 percent — markedly less protective than for teens.
The data on a booster in 5-to-11-year-olds has not been published or peer-reviewed, but it echoes those findings. Like other, this study did not measure the ability of the vaccine to stop people from becoming ill but was based on laboratory measurements of the booster’s ability to increase antibodies in their blood.
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