Poliomyelitis, also Known as polio or infantile paralysis, is a highly infectious viral disease that may attack the central nervous system and is characterized by symptoms that range from a mild nonparalytic infection to whole paralysis in a matter of hours.
There are three known types of polioviruses (called 1,2, and 3), each causing a unusual strain of the disease and all are members of the viral family of enteroviruses (viruses that infect the gastrointestinal tract). Type 1 is the cause of epidemics and many cases of paralysis, which is the most severe symptom of the infection. The virus is generally a harmless parasite of human beings. Some statistics quote one in 200 infections as significant to paralysis while others state that one in 1,000 cases reach the central nervous system (CNS).
There are three known types of polioviruses (called 1,2, and 3), each causing a unusual strain of the disease and all are members of the viral family of enteroviruses (viruses that infect the gastrointestinal tract). Type 1 is the cause of epidemics and many cases of paralysis, which is the most severe symptom of the infection. The virus is generally a harmless parasite of human beings. Some statistics quote one in 200 infections as significant to paralysis while others state that one in 1,000 cases reach the central nervous system (CNS).
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