A mathematical insight to poliovaccine failures.
D006801:Humans; D008433:Mathematics; D011051:Poliomyelitis / Q000517:prevention & control*; D017955:Poliovirus / Q000145:classification / Q000276:immunology; D011055:Poliovirus Vaccine, Oral / Q000276:immunology / Q000592:standards*
D011055:Poliovirus Vaccine, Oral