Polio is a very contagious viral disease caused by the poliovirus. It can cause permanent disability and even death, especially in children under the age of five. There are two types of polio ...

21–25 Of these cases, there were 5 of encephalitis and 5 of anterior poliomyelitis. Only once in each of these diagnostic groups was Coxsackie virus Group B, Type 5, identified as the ...