mycobacterium triplex mycobacterium triplex mycobacterium triplex is a species of mycobacterium. mycobacterium triplex scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: mycobacteriaceae genus: mycobacterium species: m. triplex binomial name mycobacterium triplexfloyd, et al. 1997 it is closely related to mycobacterium genavense. it causes disease in immunocompromised patients.