It's a rare but serious condition, that causes inflammation in the spinal cord area that directly affects a person's muscles.
Authorities say they have no confirmed cases of the nervous system condition called acute flaccid myelitis, or AFM, in NY. Lurie Children's Hospital has treated at least two of the children diagnosed with AFM, but it had not received any additional AFM patients as of Friday.
It's not a new condition, but the Centers for Disease Control and Prevention says the increase is not normal. Experts don't know what causes it.
Children's Mercy encourages people to stay home when they are sick to prevent the spread of respiratory illness. According to the CDC, the largest number of cases, about 50, were reported in September 2014 before dropping to single digits in following months.
Met Office updates yellow weather warning as Storm Callum approaches
There will also be heavy and persistent rain across a swathe of Britain leading to flooding and further disruption. Overnight, police forces reported accidents on the roads due to surface water and fallen trees.
So far this year, the CDC said there have been 38 confirmed cases across 16 states. "Since 2015, four cases reviewed by CDC experts have been counted in IL", the IDHP stated. AFM has been compared to polio because the condition can lead to paralysis.
Symptoms include facial droop/weakness, difficulty moving the eyes, drooping eyelids, or difficulty with swallowing or slurred speech.