`` It seems to be attacking the spinal cord and brain stem , '' doctor says . MRI tests spotted abnormalities in sick children 's spinal gray matter . Comment: Ten children in Colorado hospitalized with limb paralysis .
`` It seems to be attacking the spinal cord and brain stem , '' doctor says . MRI tests spotted abnormalities in sick children 's spinal gray matter . Health officials are looking for the cause ; it may be enterovirus . Ten children in Colorado hospitalized with limb paralysis .