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Popularly known as "polio", it is primarily a disease of children. It is caused by one of the smallest known virus called as "Poliovirus". It enters the body through food or water and ultimately reaches the nervous system via lymphatic system and blood stream.

There, the viruses destroy the cells of the spinal cord that are responsible for various muscular activities.

Children between the age of 6 months and 3 years are the most prone to polio infection.

In severe cases it causes paralysis of the legs. The virus is spread by secretion from nose, throat and also intestinal wastes. The incubation period is from 7-14 days.


An effective vaccine called Salk vaccine( injected vaccine developed from dead virus) nowadays Sabin vaccine( oral polio vaccine) is given . Children having received the vaccine are absolutely safe.


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