Some people have “superhuman immunity” to fight off COVID-19 if they’ve previously had the virus and received two vaccine doses, new studies shows.
Researchers say people who have had “hybrid” exposure to COVID-19 — including infection and then full vaccination — have mounted a powerful immune response to the virus and are likely able to fight off most of the variants.
A Rockefeller University study published last month found that antibodies in people who had hybrid exposure were very high and could neutralize six variants, including Delta.
“Those people have amazing responses to the vaccine,” Rockefeller University virologist Theodora Hatziioannou, who helped lead the study, told NPR.
“After natural infections, the antibodies seem to evolve and become not only more potent but also broader. They become more resistant to mutations within the [virus].”
Hatziioannou said it wasn’t clear if every person who had COVID-19 and was also vaccinated would have such a strong immune response.