Abstract
Background/Objectives: Low- and middle-income countries (LMICs) have the highest global burden of cervical cancer deaths. Human papillomavirus (HPV) vaccination is a key strategy for cervical cancer elimination, and in LMICs, global recommendations to vaccinate girls aged 9-14 years against HPV are generally implemented through school-based immunization platforms. Unfortunately, this strategy risks missing out-of-school (OOS) girls (i.e., girls not enrolled in formal schools). This narrative review maps the literature and synthesizes existing evidence on service delivery strategies for reaching OOS girls with HPV vaccination in LMICs. Methods: Using relevant databases, we conducted a narrative review of published, peer-reviewed literature to map and synthesize the existing evidence on effective service delivery strategies for reaching OOS girls with HPV vaccination in LMICs. Results: The 21 articles identified presented findings on strategies to reach OOS girls, with the most frequently cited strategies being facility-based and community outreach approaches. Authors also described community-based strategies used to identify and enumerate OOS girls, including peer tracing, church outreach initiatives, as well as partnerships with local groups (e.g., civil service organizations) and individuals (e.g., healthcare workers, teachers). The articles discussed barriers at the individual (e.g., lack of parental consent), facility/program delivery (e.g., lack of transportation for vaccines), and community (e.g., distance from homes to vaccination services) levels to HPV vaccine delivery, as well as solutions at the facility/program delivery (e.g., pilot programs) and community (e.g., multi-level partnerships) levels. Conclusions: Additional research is needed to evaluate implementation strategies targeting OOS girls with HPV vaccination. A better understanding of these strategies can provide valuable insights for HPV vaccine policymakers, healthcare providers, and program implementers.