Why did Jane Goodall put polio vaccine in the banana?

Answer 1

I think that Dame Jane Goodall vaccinated chimpanzee with the oral polio vaccine because at the time she did not know that vaccination not only does not prevent polio but it actually causes it. I would like to know whether and when she realised this well-documented fact established in humans.

Answer 2

Jane Goodall put polio vaccine in bananas in an effort to create an oral vaccine that could be administered easily to wild chimpanzees to help protect them from diseases like polio. By disguising the vaccine in a food source they were familiar with, it made it easier to administer to the chimpanzees without causing stress or harm to them.