Study of triple vaccinated people also says Omicron infection does little to reduce chance of catching variant again
People who caught Covid during the first wave of the pandemic get no boost to their immune response if they subsequently catch Omicron, a study of triple vaccinated people reports.
The team also found an Omicron infection offered little extra protection against catching the variant again. “When Omicron started flying around the country, people kept saying that’s OK, that will improve people’s immunity,” said Boyton. “What we’re saying is it’s not a good booster of immunity.” The results suggested that, regardless of the participants’ previous infection history, a few weeks after their third Covid jab their levels of T-cells against Omicron proteins were poor, while levels of antibodies against Omicron proteins were lower than against other variants.
The researchers said the finding was a surprise as it was typically assumed that a prior infection, even of a different variant, would act to boost an individual’s immune response.
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