Abstract
WHAT IS ALREADY KNOWN ABOUT THIS TOPIC? Men who have sex with men (MSM) are highly vulnerable to human immunodeficiency virus (HIV) infection and demonstrate significant mobility patterns. Understanding post-diagnosis migration patterns among HIV-positive MSM is crucial for targeted case management, yet comprehensive data from China remains limited. WHAT IS ADDED BY THIS REPORT? Among 204,394 HIV-positive MSM, 20,117 (9.8%) migrated after diagnosis, with primary movement from economically developed regions like Guangdong Province and Shanghai Municipality to less developed provincial-level administrative divisions such as Sichuan Province and Anhui Province. Key predictors of migration included age under 50 years, unmarried status, lower educational attainment, employment as commercial staff or student status, and diagnosis before 2020. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE? Enhanced healthcare resources, strengthened case management systems, and targeted HIV-related services are essential to ensure consistent treatment access and improved health outcomes for migrant HIV-positive MSM.