All three currently authorized COVID-19 vaccines still showed signs of a strong immune response eight months later without a booster, according to a study published Friday in the New England Journal of Medicine.
Dr. Ashish Jha speaks on who would be eligible for the Moderna booster after the unanimous decision to recommend the 3rd shot six months after the second dose.All three currently authorized COVID-19 vaccines still showed signs of a strong immune response eight months later withoutThe study analyzed specific markers of immunity found in the blood of people vaccinated with Pfizer, Moderna and the Johnson & Johnson vaccines.
Pfizer and Moderna vaccines rely on the same type of technology, called mRNA, while Johnson & Johnson uses a different technology, called viral vector. The two technologies prompt different types of immune responses. "We think the antibodies are often more relevant preventing against infection, and the T-cells are more relevant killing the virus -- so preventing severe disease," said Dr. Todd Ellerin, director of infectious diseases at South Shore Health and an ABC News medical contributor.
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