Background: This report describes an airborne Mycobacterium avium (MA)-infection in two red-shanked douc langurs (Pygathrix nemaeus nemaeus) from Cologne zoo.
Methods: The two individuals and their tissues were investigated clinically (including x-rays), in pathology, in pathohistology, in classical bacteriology and by polymerase chain reaction (PCR).
Results: Clinically, one individual displayed emaciation and a positive reaction in an intrapalpebral testing for M.