ALL DEFINITIONSMpoxDefinitionMpox is a rare disease caused by infection with the mpox virus, which is in the same family of viruses as the smallpox virus. Mpox is less contagious than small pox and produces milder symptoms.Related SpecialistsShowing 3 of 6Scott RobertsMDAnnette CameronMDThomas MurrayMD, PhDMore Related SpecialistsRelated Fact SheetsMpox (Formerly Monkeypox)Related NewsShowing 3 of 4Family HealthFamily HealthFamily HealthMore Related NewsRelated DepartmentsShowing 3 of 53PediatricsGeneral PediatricsGeneral Internal MedicineMore Related Departments