What is the cause of polio?

Polio is mainly caused by polio virus infection, which is a highly contagious viral disease that can be transmitted through contaminated water, food or direct contact with the patient's secretions, and in severe cases can cause paralysis or endanger life.

The virus attacks the human nervous system, especially the motor neurons in the spinal cord, affecting the normal function of the muscles. If the neurons are severely damaged, the affected muscles may become weak or even paralyzed. However, not all infected people will have symptoms. Most people may only have a mild fever, sore throat or gastrointestinal discomfort, and only a small number of cases will develop into severe multiple muscle paralysis.

The virus attacks the human nervous system, especially the motor neurons in the spinal cord, affecting the normal function of the muscles. If the neurons are severely damaged, the affected muscles may become weak or even paralyzed. However, not all infected people will have symptoms. Most people may only have a mild fever, sore throat or gastrointestinal discomfort, and only a small number of cases will develop into severe multiple muscle paralysis.

To prevent this disease, vaccination against polio is the most effective measure. Both oral vaccines (OPV) and injectable vaccines (IPV) can help the body build an immune barrier. It is also important to develop good hygiene habits, such as washing hands frequently, cooking food thoroughly, and avoiding drinking unclean water. If a child has unexplained limb weakness or other suspected symptoms, seek medical attention immediately to ensure timely diagnosis and treatment.