Abstract
Objective: To analyze the vaccination coverage of Quadrivalent HPV in adolescents in the state of Piauí. Methods: This is an evaluative, cross-sectional, descriptive study, with a quantitative approach, using information collected from the database of the National Immunization Program in the period from 2017 to 2019. Data analysis was performed using the software TabNet and Microsoft Excel. Results: Adherence to the first dose of the vaccine, even if it did not reach the adequate vaccine coverage (80%), reached higher values than the second dose, none of the age groups reached the vaccine target. Conclusion: The analyzed data show that the vaccination coverage is insufficient, and there is a greater vaccination compliance in the first dose in relation to the second dose, in both sexes. During the years under study, there is a regression in vaccination coverage over the years. It is necessary to intensify health actions and especially health education in all possible areas of coverage of the target public recommended for vaccination, especially with regard to the return of these adolescents to UBS.