51. Status of immunity against poliomyelitis: a study among European and extra-European young immigrants living in Parma.
- Author
-
Affanni P, Veronesi L, Rizziero S, Bizzoco S, Bracchi MT, and Tanzi ML
- Subjects
- Adolescent, Adult, Africa ethnology, Americas ethnology, Asia, Southeastern ethnology, Child, Child, Preschool, Europe ethnology, Female, Humans, Infant, Italy, Male, Mediterranean Region ethnology, Pacific Islands ethnology, Poliovirus classification, Seroepidemiologic Studies, Serotyping, Vaccination, Antibodies, Viral blood, Emigration and Immigration, Poliomyelitis immunology, Poliovirus immunology
- Abstract
From January 2001 to December 2003 blood specimens obtained from 323 European and extra-European young immigrants were collected for the determination of anti-polio antibody levels. They were sent to the Section of Hygiene, Department of Public Health, by the Local Health Authorities. A neutralization assay was performed to detect the anti-polio antibodies against serotypes 1, 2 and 3, using rhesus monkey kidney cells. The results showed 98,1% prevalence of anti-polio 1 antibodies (titre > or =1:2), 99,1% of anti-polio 2, and 98,8% prevalence of anti-polio 3 antibodies. The seronegativity against only one or two serotypes (antibody titre <1:2) was found in 9 subjects (2,8%) while no subject was found totally seronegative against all 3 serotypes. According to the total amount of the analyzed samples, the estimated Geometric Mean Titre (GMT) resulted from moderate to low (GMT=29 of serotype 3; GMT=48,4 of serotype 2; GMT=56,5 of serotype 1) and it appeared to be similar to the results obtained in the previous years for all 3 serotypes; the GMT of serotype 3 was still the lowest. No difference was observed in the specimens with respect to the country of origin of the examined subjects and the data collected showed a good level of immunity.
- Published
- 2005