Mycobacterium houstonense is a member of the Mycobacterium fortuitum third biovariant complex. The specific epithet houstonense refers to Houston, Texas, where the first isolate of the M. fortuitum third biovariant (sorbitol-positive) was identified. References External links Type strain of Mycobacterium houstonense at BacDive - the Bacterial Diversity Metadatabase Acid-fast bacilli houstonense Bacteria described in 2004