Poliomyelitis

Poliomyelitis is a viral infection that primarily affects the nervous system, especially the spinal cord. It is caused by the poliovirus, which enters the body through the mouth and multiplies in the throat and intestines. The virus can invade the motor neurons, leading to muscle weakness and sometimes paralysis. This paralysis often affects the legs but can also involve the respiratory muscles, which can be life-threatening. Most people infected with the virus have mild or no symptoms, but a small percentage develop severe neurological problems. The disease mainly impacts children but can affect people of all ages. Prevention through vaccination has greatly reduced the incidence of this disease worldwide.

Poliomyelitis is an acute viral infection caused by the poliovirus, a member of the Enterovirus genus. The virus selectively targets and destroys anterior horn cells in the spinal cord, leading to flaccid paralysis. The infection is transmitted via the fecal-oral route and initially replicates in the oropharynx and gastrointestinal tract. Clinical manifestations range from asymptomatic infection to aseptic meningitis and paralytic disease. Paralysis is typically asymmetric and predominantly affects the lower limbs. The disease is significant due to its potential to cause permanent disability and respiratory failure from diaphragmatic paralysis. Diagnosis is supported by detection of the virus in stool or throat swabs and characteristic clinical findings.