(pkg)clarissa guerrero was son ezra last month when all of sudden something was wrong. (clarissa guerrero, ezra's all of a sudden something was wrong. >> we were getting ready to go to dinner. came time to dress him, he wasn't able to move his left arm. he was able to an hour prior. >> his whole left side became limp. he was rushed to children's hospital los angeles diagnosed with afm. -- >> we know why some people get very sick and other people get a cold or nothing -- no. she said they have treated eight cases so far this year. after not getting any the year before. nationwide there have been 89 cases in 33 states. numbers is unclear. >> it has raised alarm along doctors who have seen it. so far we haven't found anything that reverses the process. >> after a month of intensive physical therapy, ezra is walking again. >> his left arm is still not able to move or -- anything but he is able to walk and -- and bend over and do things that he wasn't able to do a few woks ago and sfwl >> and his mother hopes that is a sign that he will continue to get better. >>> next, iowa