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Hidden immune weakness found in 14% of gravely ill COVID-19 patients

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www.sciencemag.org

Meredith WadmanScience’s COVID-19 reporting is supported by the Pulitzer Center and the Heising-Simons Foundation.From the first months of the COVID-19 pandemic, scientists baffled by the disease’s ferocity have wondered whether the body’s vanguard virus fighter, a molecular messenger called type I interferon, is missing in action in some severe cases.

Two papers published online in Science this week confirm that suspicion. They reveal that in a significant minority of patients with serious COVID-19, the interferon response has been crippled by genetic flaws or by rogue antibodies that attack interferon itself.“Together these two papers explain nearly 14% of severe COVID-19 cases.

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