Final answer:
Poliomyelitis is caused by poliovirus infection.
Step-by-step explanation:
True. Poliomyelitis (polio) is caused by an infection of the enteric polio virus. The poliovirus primarily affects the motor neurons of the brain stem and spinal cord, leading to paralysis.
The transmission of poliovirus occurs through the fecal-oral route or by aerosol or droplet transmission.