9 children have been diagnosed with a rare polio-like illness in Northern Illinois in just the past month.
Two girls -- a 2-year-old from Batavia and an 8-year-old from Chesterton, Indiana are being treated for acute flaccid myelitis at Lurie Children's Hospital.
No further details have been released about the cases, but authorities are investigating whether there might be a cluster.
AFM mimics cold or flu symptoms at first and then includes limb weakness and partial paralysis.