Study shows immune cells against COVID-19 stay high in number six months after vaccination
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16 November 2021Study shows immune cells against COVID-19 stay high in number six months after vaccination
A recent study by Johns Hopkins Medicine researchers provides evidence that CD4+ T lymphocytes—immune system cells also known as helper T cells—produced by people who received either of the two available messenger RNA (mRNA) vaccines for COVID-19 persist six months after vaccination at only slightly reduced levels from two weeks after vaccination and are at significantly higher levels than for those who are unvaccinated.
