> Contrast this to antibiotics...However, I excrete those antibiotics in urine and stool.

Well that’s just some hand wavy pseudoscience right there.

Regarding the OPV Polio Vaccine, from the Global Polio Eradication Project site - “For several weeks after vaccination the vaccine virus replicates in the intestine, is excreted and can be spread to others in close contact”

Source: http://polioeradication.org/polio-today/polio-prevention/the...