title: [Rubella immunization with HPV77DE5 and RA 27/3 vaccines of 11 to 16-year-old girls: studies of antibody formation and antibody resistance after 4 and 8 years].
abstract: In the first prepubertal study 292 girls aged 11-15 years from 5 secondary schools were immunized with HPV77DE5 with the normal dose and 1/10 of it. The seronegative rate was 30.4%. HAI-antibody conversion occurred in 98.2 to 100%. The mean antibody titer in the two groups with 1:80 and 1:84 were 2 titer steps below the mean HAI-titer of the prevaccinal seropositive girls. The booster effect on the pre-existing titers was minimal. In the second prepubertal study with 625 girls aged 11-16 years from 3 gymnasiums 50.4% were seronegative. Of 312 seronegative girls, 56 had been immunized with HPV77DE5 s.c., 151 with RA 27/3 s.c. and 105 with RA 27/3 i.n. HAI-antibody conversion was observed in 98.2%, 100% and 100% respectively. The mean HAI-antibody titer following HPV77DE5 was +/- 2 titer steps, following RA 27/3 s.c. and RA 27/3 i.n. only 0.6 titer steps lower than the mean titer of the prevaccinal seropositive group. The individuals with a low prevaccinal antibody titer showed a significant but transient antibody booster response. Antibody titer controls 4 years post vaccination in 213 of the girls (160 prevaccinal seronegative, 53 prevaccinal seropositive) showed that all prevaccinal seronegatives had remained antibody-positive. The mean HAI-titer following HPV77DE5 was only slightly lower (1: 97) than 8-12 weeks post vaccination (1: 104) wereas the mean titers following RA 27/3 s.c. and i.n. showed a decline from 1: 158 to 1: 119 and from 1: 181 to 1: 111. The comparison of negative, low and higher HAI-antibody titers with neutralisation antibody titers in sera taken before, 8-12 weeks and 4 years after vaccination gave a perfect correlation between negative and positive results in both tests. Also 8 years post vaccination all vaccinees had remained seropositive. In comparison to the 4-year value, the geometric mean HAI antibody titer had dropped to somewhat lower levels of 1: 64, 1: 74 and 1: 64 respectively in the prevaccinal seronegative vaccinees so that no titer differences existed 8 years following vaccination in the different vaccine groups. Low positive HAI titers of 1: 16 were found in 3 of 23 (13%) in the HPV77DE5 group and in 2 of 76 (2.6%) in the RA 27/3 s.c. group but in none of 54 in the RA 27/3 i.n. group. The low positive HAI titer of 1: 16 could be confirmed in the HiG and ELISA IgG tests.(ABSTRACT TRUNCATED AT 400 WORDS)
mesh_terms: D000293:Adolescent; D000917:Antibody Formation; D002499:Centrifugation, Density Gradient; D002648:Child; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006382:Hemadsorption; D006801:Humans; D007113:Immunity, Innate; D012409:Rubella / Q000276:immunology; D012411:Rubella Vaccine / Q000008:administration & dosage / Q000276:immunology*; D012737:Sex Factors; D013997:Time Factors; D014611:Vaccination
chemical_list: D012411:Rubella Vaccine
vernacular_title: Die Rötelnschutzimpfung mit HPV77DE5- und RA 27/3-Impfstoffen von 11-16 Jahre alten Mädchen: Untersuchungen zur Antikörperentwicklung und Antikörperpersistenz nach 4 und 8 Jahren.