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Problems in Predicting How Long A Person Is Protected After a COVID Infection

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Exactly how long protection lasts after a COVID infection isn’t one-size-fits-all. A few factors make it impossible to say exactly how long you’re protected from reinfection.

Earlier in the pandemic, experts theorized most people had about a 90-day immunity window. However, according to Dr. Stuart Ray, a professor of medicine and infectious diseases at Johns Hopkins University School of Medicine, there have been times when someone has been reinfected a few weeks after their original bout of sickness and times when someone is protected for months and months. With these new, more transmissible variants, there is no way to predict which category you’ll fall into.

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