COVID-related syndrome in adults severe, hard to diagnose, study findsMultisystem inflammatory syndrome in adults (MIS-A) is a rare but severe hyperinflammatory condition that begins roughly 4 weeks after COVID-19 symptom onset and likely results from an outsized immune response, concludes a systematic review yesterday in JAMA Network Open.Researchers from the US Centers for Disease Control and Prevention conducted a literature review from May 1, 2020, to May 25, 2021, identifying 221 patients around the world diagnosed as having MIS-A.
First identified in children (MIS-C) in April 2020, the syndrome has since also been recognized in adults.MIS-A typically emerges about 4 weeks after COVID-19 symptoms began, producing inflammation and