Immunocompromised may need a fourth Covid-19 shot, CDC says
Research showed that a booster dose enhanced the antibody response to the vaccine in certain immunocompromised people.
People who are immunocompromised who got the single-dose Johnson & Johnson shot should get a booster at least two months after their initial vaccine. People who choose a Moderna vaccine as a booster, even if they received a different vaccine as the first dose, should get the half-dose sized shot that was authorized as a booster for Moderna’s vaccine, the CDC said.
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