title: The excretion of type 1 poliovirus after challenge following primary immunization with quadruple, Salk and Sabin vaccines.
mesh_terms: D002675:Child, Preschool; D005243:Feces; D006801:Humans; D007223:Infant; D017955:Poliovirus; D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral
chemical_list: D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral