Yale New Haven Children's Hospital has three patients diagnosed with the syndrome believed to be tied to COVID-19.
This comes as doctors begin to get a clearer picture of how the virus is affecting children's bodies.
"It's a post-exposure inflammatory response, meaning the body has recently seen and been exposed to either a virus," said Dr. James Schneider, of Northwell Health. "Maybe environmental exposure in the past, and in its response to try and fight it off, it fights it off, but then the immune system inadvertently causes inflammation in blood vessels in the body.
Related: What parents need to know about Pediatric Multi-System Inflammatory Syndrome
Hospital officials recommend parents with children who may be suffering from symptoms call a doctor for advice.
Symptoms include fever, rash, vomiting and diarrhea.
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