Abstract
WHAT IS ALREADY KNOWN ABOUT THIS TOPIC? Significant changes in human immunodeficiency virus (HIV) transmission modes have occurred in China, and the proportion of heterosexual transmission increased in recent years. WHAT IS ADDED BY THIS REPORT? The proportions of diverse transmission routes and subgroups of heterosexual transmission were analyzed by provincial-level administrative divisions (PLADs), and nationwide spatial clustering of HIV transmission through commercial heterosexual contact (CHC) and non-marital non-commercial heterosexual contact (NMNCHC) was explored. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE? This report provides evidence for geographic clustering of HIV transmission through CHC and NMNCHC in China and identifies priority regions where specified research and targeted HIV prevention and control strategies should be implemented.