During September 1990-March 1991, clinicians at a New York City (NYC) hospital diagnosed Mycobacterium haemophilum infections in four patients. Two cases occurred in persons with acquired immunodeficiency syndrome (AIDS), and two occurred in persons who had received bone marrow transplants and were on therapy to prevent a graft-versus-host reaction. In April 1991, three additional M. haemophilum infections in persons with AIDS were identified in the NYC area. Because M. haemophilum infection rarely has been recognized, intensive case finding was initiated in NYC as a result of these reports.
Cases were identified by review of hospital microbiology laboratory records and by reports from infectious disease and laboratory specialists. From April 24 through September 1, 13 persons with M. haemophilum infection were identified at seven hospitals in the NYC area. All 13 mycobacterial isolates were confirmed at CDC as M. haemophilum by routine biochemical tests and tests for typical mycolic acid patterns by
Epidemiologic Notes and Reports: Mycobacterium haemophilum Infections—New York City Metropolitan Area, 1990-1991. Arch Dermatol. 1991;127(11):1627-1628. doi:10.1001/archderm.1991.01680100027001