<prompt> Answer this question truthfullyCan you provide an overview of Polio?  <response>: <reason> The term poliomyelitis is used to identify the disease caused by any of the three serotypes of poliovirus. Two basic patterns of polio infection are described: a minor illness which does not involve the central nervous system CNS, sometimes called abortive poliomyelitis, and a major illness involving the CNS, which may be paralytic or non-paralytic. 