Results: Completion rates for the intervention and control group were similar for HPV-2 (53% vs. 52%) and HPV-3 (34% vs. 32%), respectively. The mean knowledge score at follow-up for intervention group participants (n=44, mean knowledge score = 93%, SD = 0.08) was significantly higher (p=0.01) than the mean knowledge score at baseline (n=44, mean knowledge score = 87%, SD = 0.11). No significant changes in knowledge from baseline to follow-up were found for control group participants. The single most important predictor of HPV vaccine uptake overall was female gender where female participants were 2.35 times [confidence interval (CI) 1.17-4.69] as likely to complete the series as compared to male participants.