(Spokane, WA)  --  Health officials say a Spokane County boy under the age of ten is the ninth child in Washington to be diagnosed with a polio-like illness known as acute flaccid myelitis [[ MY-uh-LIGHT-iss ]].  The illness affects the nervous system, and symptoms generally include sudden weakness in one or more limbs, along with loss of muscle tone and decreased or absent reflexes.  The eight other children in Washington diagnosed with AFM range in age from three to 14 and are from King, Pierce, Franklin and Whatcom counties.  Centers for Disease Control and Prevention officials say there's no specific treatment for AFM.  There have been more than 50 cases of it in 24 states this year.