June 28, 2021 -- Pfizer and Moderna’s COVID-19 vaccines may protect against the coronavirus for months -- and much longer for those who had been infected and were later vaccinated, according to a new study.

The study, in the journal Nature, says that either vaccine provides robust protection for at least 12 weeks after a second dose and could provide low-level protection for at least a year.

Researchers say their study showed the vaccines provide “robust and prolonged” protection.

The New York Times reported that researchers on this and other studies suggest that COVID-19 immunity might last for years, or even a lifetime, in people who had the disease, recovered, and were vaccinated.

The researchers, led by Ali H. Ellebedy, PhD, of the Department of Pathology and Immunology at Washington University School of Medicine in St Louis, warn that variants of the virus that emerge in the future could change the effectiveness of the vaccines.

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Sources

SOURCES:

Nature: “SARS-CoV-2 mRNA vaccines induce persistent human germinal centre responses.”

The New York Times: “Pfizer and Moderna Vaccines Likely to Produce Lasting Immunity, Study Finds.”

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