Abstract
Background and Objectives: Cervical cancer remains a critical public health challenge in Eastern Europe and Central Asia (EECA), where systemic barriers have hindered prevention efforts. This descriptive regional study evaluates progress toward achieving Target 1 of the WHO Global Strategy for Cervical Cancer Elimination-vaccinating 90% of girls by age 15-in 17 countries and territories. The research is situated within the context of the Regional Alliance for Cervical Cancer Prevention in EECA, a multi-stakeholder platform launched by UNFPA in 2021 to accelerate regional progress toward WHO targets. The Alliance supports countries through technical collaboration, shared learning, and political engagement. Therefore, as a secondary endpoint, the study explores possible correlations between national achievements and the post-2021 scale-up efforts supported by the Alliance. Methods: A standardized questionnaire, consolidated by United Nation Population Fund (UNFPA) technical experts, was disseminated in November 2024 to 17 national focal points, yielding 19 responses due to disaggregated submissions from Bosnia and Herzegovina. The survey collected data on HPV vaccination policies, delivery models, vaccine type, target populations, and coverage. Results: By late 2024, six countries had implemented HPV vaccination before 2021, while six more launched programs after the Regional Alliance's formation in 2021. Coverage varied widely, from 0.2% in Brčko District to 99.3% in Uzbekistan. Most countries targeted girls aged 9-14, with increasing male inclusion and catch-up cohorts. Gardasil 4 was the most used vaccine, though Gardasil 9 is gaining ground. School-based and hybrid delivery strategies were associated with significantly higher coverage (p = 0.0121). Inferential analysis also showed significant variation by vaccine type (p = 0.0067) and a positive correlation with program maturity (ρ = 0.52, p = 0.067). However, findings should be interpreted considering limitations including reliance on self-reported country data and absence of independent validation. Conclusions: The results offer actionable insights into delivery models, gender inclusion, and regional disparities-supporting efforts to close the gap toward 2030 elimination targets in EECA Countries.