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3

As stated by others, polio is primarily a gastro bug, an enterovirus related to Coxsackie and a number of others which produce stomach and respiratory symptoms, as well as various others. Most polio infections result in nothing worse than a case of "the stomach flu", but in a small percentage of cases the virus escapes from the GI tract and produces ...


5

The reason why the oral polio vaccine is not digested in the stomach is that the poliovirus itself has adapted such that it can survive the acidic conditions of the stomach. By using an attenuated (mutated to not cause neurological symptoms) version of the virus, the oral vaccine can also survive the acidic conditions of the stomach. For TB which is ...


32

There are different polio vaccines - one live (attenuated) vaccine which is given orally and one inactivated, which is injected. The main reason for using the live orally vaccine is that it provides excellent immunity (better than the inactivated) since it uses the natural infection route (oral-faecal) in the body where it enters through cells in the ...



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