A Case of Acute HIV-1 and Monkeypox Coinfection After Condomless Insertive Anal Sex in the Previous 69 Days - Beijing Municipality, China, August-October, 2023.

WHAT IS ALREADY KNOWN ABOUT THIS TOPIC?: The prevalence of monkeypox (mpox) infections is primarily observed among young men who engage in sexual activities with other men, and there is a possibility of sexual transmission. Co-occurring sexually transmitted infections have also been documented.

WHAT IS ADDED BY THIS REPORT?: In this report, we present a case of a patient in China who was simultaneously diagnosed with mpox, and acute human immunodeficiency virus (HIV) infection. The patient exhibited symptoms of fever and widespread papules on the trunk, face, and genital area.

WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE?: It is crucial for health agencies to prioritize HIV testing when mpox is suspected or diagnosed in individuals with recent engagement in high-risk sexual behavior.