The CDC has confirmed that there have been at least 116 cases of the polio-like paralysis condition called acute flaccid myelitis (AFM).
The CDC says that the cases were spread amongst 31 different states. The disease is identified by muscle weakness or paralysis caused by damage to the spine. The CDC says none of the cases are confirmed cases of AFM, but viruses often cause the damage. The majority of patients have not tested positive for one virus, but an entire family of viruses are believed to be contributors.
The CDC has noted an every-other-year pattern in cases of AFM, with 120 confirmed cases in 2014, 22 cases in 2015, 149 cases in 2016 and 33 cases in 2017. They are not certain why the affliction has hit some children more than others that catch one of these viruses, but it may be related to a genetic predisposition or the virus directly attacking the patient’s nervous system.