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Watson-Jones, Deborah; Baisley, Kathy; Ponsiano, Riziki; Lemme, Francesca; Remes, Pieter; Ross, David; Kapiga, Saidi; Mayaud, Philippe; de Sanjosé, Silvia; Wight, Daniel; Changalucha, John; Hayes, Richard (2012)
Publisher: Oxford University Press
Journal: The Journal of Infectious Diseases
Languages: English
Types: Article
Subjects: Viruses, Major Articles and Brief Reports

Classified by OpenAIRE into

mesheuropmc: education
BACKGROUND: We compared vaccine coverage achieved by 2 different delivery strategies for the quadrivalent human papillomavirus (HPV) vaccine in Tanzanian schoolgirls.
METHODS: In a cluster-randomized trial of HPV vaccination conducted in Tanzania, 134 primary schools were randomly assigned to class-based (girls enrolled in primary school grade [class] 6) or age-based (girls born in 1998; 67 schools per arm) vaccine delivery. The primary outcome was coverage by dose.
RESULTS: There were 3352 and 2180 eligible girls in schools randomized to class-based and age-based delivery, respectively. HPV vaccine coverage was 84.7% for dose 1, 81.4% for dose 2, and 76.1% for dose 3. For each dose, coverage was higher in class-based schools than in age-based schools (dose 1: 86.4% vs 82.0% [P = .30]; dose 2: 83.8% vs 77.8% [P = .05]; and dose 3: 78.7% vs 72.1% [P = .04]). Vaccine-related adverse events were rare. Reasons for not vaccinating included absenteeism (6.3%) and parent refusal (6.7%). School absenteeism rates prior to vaccination ranged from 8.1% to 23.5%.
CONCLUSIONS: HPV vaccine can be delivered with high coverage in schools in sub-Saharan Africa. Compared with age-based vaccination, class-based vaccination located more eligible pupils and achieved higher coverage. HPV vaccination did not increase absenteeism rates in selected schools. Innovative strategies will be needed to reach out-of-school girls.
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