What is MIS-C?
MIS-C is a serious though rare condition in children in which the body’s own immune system overreacts to a SARS-CoV-2 infection, resulting in inflammation of multiple organ systems throughout the body. It can affect the heart, blood vessels, gastrointestinal organs, lungs and other respiratory organs, kidneys, skin, eyes, and nervous system, and it can lead to shock, impaired organ function, and even organ failure. In most cases, though, children experience inflammation in only a few of these organs.
https://www.yalemedicine.org/conditions/multisystem-inflammatory-syndrome-in-children-mis-c
Hope you didn't get your kid jabbed.