Mpox study reveals that hidden infections may fuel spread

A Kaiser Permanente study of nearly 8,000 men shows that in mid- to late 2024, mpox was far more common than previously thought among men who had sex with men. Individuals without symptoms accounted for most infections and likely played a prominent role in transmission, contrary to prior assumptions that people had to be symptomatic to spread the disease. The study is published in the journal Nature Communications.