POLIOMYELITIS is validvalid

an infectious disease caused by a poliovirus [n POLIOMYELITIDES, POLIOMYELITISES]

183,656 of 196,601 in NWL2023·also valid in CSW24

a virus disease of the spinal cord, often causing paralysis; infantile paralysis [n POLIOMYELITISES or POLIOMYELITIDES]