New research in Nature suggests that an autoimmune over-reaction could be what’s driving a pattern of multisystem inflammatory syndrome in children (MIS-C) after COVID-19 illness. Researchers looked at 199 blood samples from children with MIS-C and 45 control samples from children with COVID-19 but without MIS-C. About one-third of the MIS-C patients had autoantibodies for part of the human protein SNX8, which is found in the heart, lungs, kidneys, brain, skin, eyes, and gastrointestinal tract. …
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