 "Mycobacterium hassiacum" was first isolated from human urine in the German province of Hesse, with the host showing no signs of disease.Another isolation of "M. hassiacum" from urine was also apathogenic.For these reasons, "M. hassiacum" has been assigned a Biosafety level 1, meaning it is not known to consistently cause disease in healthy adult humans, and is a minimal hazard to laboratory personnel and the environment.