Five children in California have a `` polio-like syndrome , '' according to neurologists . The five are all under the age of 5 and were diagnosed with polio at birth. In the late 1990s and early 2000s , fatal encephalitis was a big problem in Malaysia and Taiwan . Another type , enterovirus 71 , is more commonly linked to paralysis . Both are uncommon in the United States ; state health officials say risk is very low .
Five children in California have a `` polio-like syndrome , '' according to neurologists . The five are all under the age of 5 and were diagnosed with polio at birth. Another type , enterovirus 71 , is more commonly linked to paralysis . Both are uncommon in the United States ; state health officials say risk is very low .