The Centers for Disease Control and Prevention has confirmed the link between a rare, potentially deadly syndrome in children with COVID-19, a belief already held by New York physicians, New York City Mayor Bill de Blasio announced Monday.

New York City's health department has found 145 cases of children sickened by what was previously referred to as pediatric multi system inflammatory syndrome (PIMS-TS). De Blasio says the city will work under the CDC's latest definition of what it now calls multi-system inflammatory syndrome in children (MIS-C) to determine the most accurate case count.