The Malaysian HPV Immunization Catch-Up Program (HITCH-UP) addresses vaccine shortages from 2021–2023, aiming to immunize over 700,000 missed schoolgirls. Implemented through the national school-based program and MyVAS digital system, it targets girls aged 13 with a single-dose schedule. Historical data show high coverage (>85%) before shortages, dropping to 32% by 2023. The catch-up strategy focuses on timely immunization before school completion and leverages digital monitoring for data management. Key challenges include limited ICT resources, but strong intersectoral support underpins program success.