EXAMINING THE BARRIERS AND OPPORTUNITIES FOR HUMAN PAPILLOMAVIRUS VACCINE DELIVERY IN CANCER CARE SETTINGS: A MIXED-METHODS STUDY.

While pediatric, adolescent, and young adult (PAYA) cancer survivors are at increased risks for secondary cancers, their HPV vaccine uptake rates are poor. Therefore, we conducted a mixed-methods study to identify the barriers and opportunities for HPV vaccine delivery among PAYA cancer care providers. We distributed a semi-structured questionnaire to a professional organization comprised of PAYA oncology and hematology healthcare providers between April-July 2022. Questionnaire measures included demographic and practice characteristics, HPV vaccine knowledge, willingness, barriers, opportunities, and roles for HPV vaccine delivery. Descriptive characteristics were generated for quantitative data, and content analysis was used to identify themes. A total of 49 providers responded to our survey. A majority were female (68%) and non-Hispanic white (74%). Approximately 76% were oncology or hematology physicians, and most worked in a cancer center or children's hospital (86%). Over half (63%) had been practicing for >15 years, and a majority saw patients ages 11-17. Although less than half reported discussing HPV vaccination with their patients, 69% were willing to become involved in HPV vaccine delivery. The most frequently reported barriers identified in our content analysis were related to system-level factors. Furthermore, providers identified opportunities within cancer prevention education, transitions in care, and at the system-level. Although barriers to HPV vaccination persist in cancer care, most providers perceived there to be opportunities to become involved in HPV vaccine delivery. Identifying strategies for PAYA oncology and hematology healthcare providers to adopt a stronger role in HPV vaccination remains a significant opportunity for future implementation research.