Unvaccinated Might Be Reinfected by SARS-CoV-2 within Three Months

A new study, led by faculty at Yale School of Public Health and the University of North Carolina at Charlotte, finds that strong protection following natural infection is short-lived and unvaccinated individuals can be reinfected by SARS-CoV-2 in three months or less.Unvaccinated Might Be Reinfected by SARS-CoV-2 within Three Months

For the study, a team of researchers analyzed known reinfection and immunological data from the close viral relatives of SARS-CoV-2 that cause "common colds", as well as immunological data from SARS-CoV-1 and Middle East Respiratory Syndrome. Leveraging evolutionary principles, the scientists were able to model the risk of COVID-19 reinfection over a certain period of time.

Study co-author Alex Dornburg, assistant professor of bioinformatics and genomics at the University of North Carolina at Charlotte, says: “As new variants arise, previous immune responses become less effective at combating the virus. Those who were naturally infected early in the pandemic are increasingly likely to become reinfected in the near future.”

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