Srámová, H Persistence of antibodies in a population immunized with oral poliovaccine (OPV). [electronic resource] - Journal of hygiene, epidemiology, microbiology, and immunology 1979 - 212-9 p. digital Publication Type: Journal Article ISSN: 0022-1732 Subjects--Topical Terms: AdolescentAdultAntibodies, Viral--biosynthesisAntibody SpecificityChildChild, PreschoolCzechoslovakiaFollow-Up StudiesHumansNeutralization TestsPoliovirus--immunologyPoliovirus Vaccine, Oral--immunology