Could COVID-19 immunity last decades? Here’s the science.

The body builds a protective fleet of immune cells when infected with COVID-19, and in many people, those defenses linger for more than six months after the infection clears, according to a new study.

The immune cells appear so stable, in fact, that immunity to the virus may last at least several years, the study authors said. “That amount of [immune] memory would likely prevent the vast majority of people from getting hospitalized disease, severe disease, for many years,” co-author Shane Crotty, a virologist at the La Jolla Institute of Immunology in California, told The New York Times, which first reported on the study.

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