There are now five possible cases of a polio-like illness in Maryland, health officials confirm.
It's possible that some milder cases haven't been reported by doctors to their state health department or the CDC, but Messonnier believes that number would be small. In other cases, patients remain paralyzed. Symptoms also can include facial droop and weakness, difficulty moving the eyes, drooping eyelids or difficulty swallowing and slurred speech.
Similar links have been found to West Nile virus, some environmental toxins and "a condition where the body's immune system attacks and destroys body tissue that it mistakes for foreign material", Messonnier said, and while these things are known to occasionally cause AFM, they haven't found any cause for the majority of cases.
There have been no confirmed cases of AFM in Maine this year, according to Emily Spencer, spokesperson for the Maine Department of Health and Human Services and the Maine CDC. Authorities say they are still awaiting confirmed lab results from the CDC.
The OSDH says the Oklahoma resident is less than 18 years of age.
In addition to viruses, potential causes may include environmental toxins and genetic disorders, according to the CDC, and it "can be hard to diagnose because it shares numerous same symptoms as other neurologic diseases".
So far, the CDC has found no relationship between vaccines and children diagnosed with AFM from the 2014 cases.
The CDC said the condition isn't new, "but the increase in cases we saw starting in 2014 is new".
Mary said, "We have a 9-year-old grandson that we worry about and other grandchildren and we just don't know enough about it".
The mysterious polio-like disorder that's striking children around the country is growing, according to an update from federal health officials Tuesday.
CNN reached out to several health departments across the country, including IL, which reported 10 cases of AFM.
Six children in Minnesota were diagnosed with the disease since mid-September.
Parents and clinicians should remember that this is a rare condition, affecting less than one in a million people, she said.
Benjamin Greenberg, a neurologist who has treated children with AFM at the University of Texas Southwestern in Dallas, said AFM is "exquisitely rare".
More broadly, she noted, "there is a lot we don't know about AFM".
Lacking an established cause, health officials confirm cases through a review of brain scans and symptoms.
Parents have reported that the limbs of affected children appear lifeless.
The CDC is actively investigating and monitoring disease activity and recommends taking standard prevention measures such as hand-washing, protecting oneself from mosquito bites and staying up-to-date on vaccinations.