A study in BMJ Global Health explores the role of private sector engagement in strengthening immunisation programs in low- and middle-income countries (LMICs). The research highlights that partnerships with private healthcare providers, pharmacies, and businesses can expand vaccine access, improve service delivery, and increase coverage. Key strategies include leveraging private sector infrastructure, integrating public-private data systems, and fostering collaborative financing models. The study emphasizes the need for clear regulatory frameworks and alignment with national immunisation goals to ensure quality and equity. Policymakers and practitioners are encouraged to explore innovative public-private partnerships as a way to enhance the reach and efficiency of immunisation programs.