title: [State of collective immunity to poliomyelitis in Moscow donors].
abstract: Immunity induced by immunization with oral poliomyelitis vaccine has long been considered to last for life, similarly to immunity developing after infection with wild poliomyelitis virus. Vaccine virus cannot circulate among the immune population for a long time. The vaccination of children against poliomyelitis, carried out in the course of many years, has made it possible to suggest that a considerable number of immune persons were present among the adult population. The examination of 1,030 Moscow donors has revealed that antibodies to poliomyelitis virus of types 1, 2 and 3 were detected in 47.3%, 45.5% and 76.4% of the examinees respectively, the values of the average geometric titers being low. It is known that passages of poliomyelitis vaccine virus through nonimmune persons may result in emergence of revertant viruses with increased neurovirulence. The nonimmune adult population, especially the mothers of vaccinated and revaccinated children, may serve as favorable environment for the circulation of vaccine viruses and the appearance of revertant viruses.
authors.affiliation: Chumakov Institute of Poliomyelitis and Viral Encephalitis, Federal Center of State Sanitary and Epidemiological Surveillance, Moscow, Russia.
authors.forename: V B
authors.initials: VB
authors.lastname: Seĭbil'
authors.forename: L P
authors.initials: LP
authors.lastname: Malyshkina
authors.forename: I K
authors.initials: IK
authors.lastname: Lavrova
authors.forename: V F
authors.initials: VF
authors.lastname: Efimova
authors.forename: V N
authors.initials: VN
authors.lastname: Sadovnikova
mesh_terms: D000328:Adult; D000914:Antibodies, Viral / Q000032:analysis; D001782:Blood Donors / Q000706:statistics & numerical data*; D002648:Child; D005260:Female; D006801:Humans; D007109:Immunity; D007110:Immunity, Active; D007114:Immunization; D008875:Middle Aged; D009031:Moscow; D011051:Poliomyelitis / Q000276:immunology* / Q000517:prevention & control; D017955:Poliovirus / Q000276:immunology*; D011055:Poliovirus Vaccine, Oral / Q000627:therapeutic use*; D012189:Retrospective Studies; D016036:Seroepidemiologic Studies; D013997:Time Factors; D014505:Urban Population; D014611:Vaccination
chemical_list: D000914:Antibodies, Viral; D011055:Poliovirus Vaccine, Oral