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Pfizer, Moderna Vaccine Protection May Last Months

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Pfizer and Moderna’s COVID-19 vaccines may provide protection against the virus for months — and much longer for those who had been infected and were later vaccinated, according to a new study.

The study, published in the journal Nature, found either vaccine provided robust protection for at least 12 weeks following 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 COVID immunity might last for years, or even a lifetime, in people who had COVID, 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.

Aaron Gould Sheinin is senior news editor for WebMD and Medscape.

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