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Journal of Clinical Microbiology, April 1999, p. 1008-1012, Vol. 37, No. 4
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Comparison of Large Restriction Fragments of Mycobacterium avium Isolates Recovered from AIDS and Non-AIDS Patients with Those of Isolates from Potable Water

T. Aronson,1,* A. Holtzman,1 N. Glover,2 M. Boian,1 S. Froman,1 O. G. W. Berlin,1 H. Hill,1 and G. Stelma Jr.3

Education and Research Institute1 and Department of Pathology,2 Olive View-University of California, Los Angeles, Medical Center, Sylmar, California, and U.S. Environmental Protection Agency, Cincinnati, Ohio3

Received 30 October 1998/Returned for modification 7 December 1998/Accepted 30 December 1998

We examined potable water in Los Angeles, California, as a possible source of infection in AIDS and non-AIDS patients. Nontuberculous mycobacteria were recovered from 12 (92%) of 13 reservoirs, 45 (82%) of 55 homes, 31 (100%) of 31 commercial buildings, and 15 (100%) of 15 hospitals. Large-restriction-fragment (LRF) pattern analyses were done with AseI. The LRF patterns of Mycobacterium avium isolates recovered from potable water in three homes, two commercial buildings, one reservoir, and eight hospitals had varying degrees of relatedness to 19 clinical isolates recovered from 17 patients. The high number of M. avium isolates recovered from hospital water and their close relationship with clinical isolates suggests the potential threat of nosocomial spread. This study supports the possibility that potable water is a source for the acquisition of M. avium infections.

* Corresponding author. Mailing address: Olive View-UCLA Education and Research Institute, Olive View-UCLA Medical Center, 14445 Olive View Dr., Sylmar, CA 91342-1495. Phone: (818) 364-3449. Fax: (818) 364-3465. E-mail: twa{at}west.net.

Journal of Clinical Microbiology, April 1999, p. 1008-1012, Vol. 37, No. 4
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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Copyright © 1999 by the American Society for Microbiology. All rights reserved.