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Polio is caused by a virus that is ingested via the mouth and then infects the gut. It makes sense to use a vaccine that is administered the same way.

We used a weakened strain of the polio virus that was administered orally for years. It has a lot of advantages to the inject-able vaccine but when the disease became so rare in the western world that most of the cases may have been related to the vaccine itself it made sense to switch to the injection.

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14y ago

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How was the polio vaccine invented?

The first ever polio vaccine was developed by Dr Jonas Salk at the University of Pittsburgh in the early 1950s. It was a killed vaccine that was tested in clinical trials in 1954 and ultimately gained government approval by 1955 for use on the common public. There is also another polio vaccine that was developed by Dr Albert Sabin. This vaccine was a live version of the polio virus and is taken orally. It was approved for use in the general public in 1963. == == == == == == == ==


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The first ever polio vaccine was developed by Dr Jonas Salk at the University of Pittsburgh in the early 1950s. It was a killed vaccine that was tested in clinical trials in 1954 and ultimately gained government approval by 1955 for use on the common public.There is also another polio vaccine that was developed by Dr Albert Sabin. This vaccine was a live version of the polio virus and is taken orally. It was approved for use in the general public in 1963.Read more: When_was_the_Polio_vaccine_invented


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a vaccine that stops you getting polio!


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It can be given orally or as an injection.


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