But like the flu or other viruses , not all the roughly 100 enterovirus strains are the same . A little girl named Rudolph Valentini dies at CDC . The Children 's Hospital of Michigan found she had enterovirus D68 , which she died of , doctor says . Enterovirus D68 is a pernicious strain of a common virus ; children are most vulnerable . CDC confirms 691 enterovirus D68 cases in four states ; says numbers will rise .
A little girl named Rudolph Valentini dies at CDC . The Children 's Hospital of Michigan found she had enterovirus D68 , which she died of , doctor says . Enterovirus D68 is a pernicious strain of a common virus ; children are most vulnerable . CDC confirms 691 enterovirus D68 cases in four states ; says numbers will rise .