Mild coronavirus infection leaves behind lasting antibody protection, research suggests

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Even a mild case of coronavirus could leave people with lifelong protection against the virus, a new study suggests, with researchers calling previous reports that immunity was not long-lived following infection "a misinterpretation of the data."

In the study, conducted by Washington University School of Medicine in St. Louis and published May 24 in the journal Nature, researchers took bone marrow samples from 18 out of 77 participants who were already signed up to give blood samples at three-month intervals starting about a month after initial infection. The bone marrow samples were taken between seven and eight months after initial COVID infection. Five of the 18 participants then gave second bone marrow samples four months later.