Mycobacterium fortuitum group (MFG) members are able to cause clinical mycobacteriosis in fish and other animals including humans. M. alvei, M. arceuilense, M. brisbanense, M. conceptionense, M. fortuitum, M. peregrinum, M. porcinum, M. senegalense, M. septicum, and M. setense were isolated from fish with mycobacteriosis. In other animals only three MFG species have been isolated: M. arceuilense from camels' milk, M. farcinogenes from cutaneous infections often described as "farcy", and M. fortuitum from different domestic and wild mammals' species. Out of 17, only 3 MFG species (M. arceuilense, M. lutetiense and M. montmartrense) have never been reported in humans. A total of eight MFG members (M. alvei, M. brisbanense, M. conceptionense, M. fortuitum subsp. acetamidolyticum, M. houstonense, M. peregrinum, M. porcinum, and M. septicum) have been isolated from both pulmonary and extrathoracic locations. In extrathoracic tissues five MFG species (M. boenickei, M. farcinogenes, M. neworleansense, M. senegalense, and M. setense) have been diagnosed and only one MFG member (M. fortuitum subsp. acetamidolyticum) has been isolated from pulmonary infection.

Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Bundoora Melbourne VIC 3086 Australia

Faculty of Regional Development and International Studies Mendel University in Brno Tr Generala Piky 7 613 00 Brno Czech Republic

Public Health Institute Ostrava Partyzanske Nam 7 702 00 Ostrava Czech Republic

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