A new study published in Nature Communications challenges the assumption that only people with symptoms can spread mpox. The study found that many men who have sex with men (MSM) tested positive for mpox even though they had no symptoms. Researchers then confirmed that these men likely passed on mpox to partners without ever knowing they had the virus. ... Most experts believed that mpox was primarily spread by people who had active symptoms like sores. However, contact tracers who tried to track outbreaks from one diagnosed patient to another had trouble finding connections between cases. This new study may...