Rapid Development of a Theory-Based Targeted Intervention and Communication Plan for HPV Vaccine Introduction in Kosovo Using the Behaviour Change Wheel Model.

: Human papillomavirus (HPV) infection is the leading cause of cervical cancer, which presents a significant health burden in low- and middle-income settings such as Kosovo, where it is the second leading cause of death among women. HPV vaccines are highly effective and integral to global cervical cancer elimination efforts. In 2024, Kosovo introduced the HPV vaccine into its immunisation schedule via a school-based program targeting sixth-grade girls. Rapid, theory-based insights supported development of a tailored communication and intervention plan ahead of the introduction. : Over a two-week period, qualitative research was conducted with 102 participants, including healthcare professionals, parents, girls in the target age group, school staff, and community influencers. Data collection, analysis, and intervention development were carried out using the Behaviour Change Wheel (BCW) model, underpinned by the Capability, Opportunity, and Motivation for Behaviour change (COM-B) theoretical framework. : Trust in school-based immunisation and healthcare professionals emerged as key drivers, while a predominance of capability- and physical-opportunity-related barriers across target groups underscored the need for targeted communication and capacity-building efforts for all stakeholders. Using the BCW model, communication and intervention activities were developed for implementation by partners. : Using rapid insight research grounded in the BCW model enabled the timely identification of behavioural drivers and barriers to HPV vaccine acceptance and supported development of a targeted intervention plan. The findings echoed global research on HPV vaccine introduction, highlighting context-specific needs and enablers and contributing to a successful rollout marked by high uptake within the first six months.