the United States in turn warns of Kawasaki disease, which affects children

US authorities issued a warning to health professionals on Thursday concerning a rare, but potentially fatal, inflammatory disease affecting children and possibly linked to Covid-19.

The disease, called multi-inflammatory syndrome in children (MIS-C) by the American Centers for Disease Prevention and Control, was first reported in late April in the United Kingdom and presents symptoms close to the disease. from Kawasaki.

Since then, around 100 cases, including at least three deaths, have been reported in New York State. “Healthcare providers who have treated or treated patients under the age of 21 who meet the criteria for (disease) MIS-C should report suspected cases to their local health department,” alert the US Prevention Centers (CDC). ).

Delayed and excessive immune response

These criteria are the appearance of symptoms such as fever and inflammation of several organs requiring hospitalization, with the impossibility of establishing a diagnosis, as well as exposure to Covid-19 or confirmation of the disease in the patient. . Doctors confronted with this disease have observed symptoms similar to those of Kawasaki disease, a vascular syndrome affecting young children, the cause of which remains unknown.

According to the CDC, the hypothesis of this disease should be considered “for any infant death with proof of an infection with Sars-CoV-2”, the name of the virus causing Covid-19.

These inflammatory symptoms appear to appear four to six weeks after the child is infected with the virus, when he has already developed antibodies, according to pediatrician Sunil Sood of the Cohen Children’s Medical Center in New York. .

“They had the virus, their bodies fought it. But now there is this delayed and excessive immune response”

Further strengthening the mystery around this disease, no similar case has been reported in children in Asia, including in China where the virus appeared in December. Some suggest the possibility of genetic reasons for this.

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