What are the political implications of worm infestation? Were the Egyptian elites infested with parasites? Do parasites explain current global policies such as open borders (i.e. open borders for parasitic/worm infestation)?

Can human behaviour be explained, at least in part, in terms of the flora and fauna in our gut and intestines?

Why are vaccines mandatory, but deworming are not? Deworming is safe and effective, so what prevents it from being given annually as a public health policy?