evidence of previous infection with mycobacterium avium-mycobacterium intracellulare complex among healthy subjects: an international study of dominant mycobacterial skin test tests with 0.1 ml of intermediate-strength mycobacterium tuberculosis purified protein derivative (ppd) and 0.1 ml of mycobacterium avium sensitin were conducted on 484 healthy subjects from diverse geographic sites. reactions of > or = 5 mm to one antigen that exceeded the reaction to the other by > or = 3 mm were considered m. avium- or ppd-dominant. ppd-dominant reactions were more frequent at sites where routine bacille calmette-guérin immunization is done or where there are high rates ...19938245545
persistent colonisation of potable water as a source of mycobacterium avium infection in aids.the source of mycobacterium avium infection in aids has not been identified and it is not known whether most patients with aids acquire the organism from recent infection or by reactivation of previous infection. as part of a prospective epidemiological study, we isolated multiple colonies of m avium from patients with aids and from potable water to which they had been exposed. all isolates were analysed with pulsed field gel electrophoresis (pfge). as judged by pfge, 29 (81%) of 36 patients wer ...19947910236
isolation of mycobacterium avium complex from water in the united states, finland, zaire, and kenya.disseminated infection with organisms of the mycobacterium avium complex (mac) is a common complication of aids in the united states and other developing countries, but it is rare or absent in sub-saharan africa. to assess the comparative likelihood of exposure to mac in these geographic areas, we used a standard protocol to culture 91 water samples from environmental sites and piped water supply systems in the united states, finland, zaire, and kenya. mac was isolated from all geographic areas ...19938308115
utility of dual skin tests to evaluate tuberculin skin test reactions of 10 to 14 mm in healthcare define the utility of 10- to 14-mm reactions to a mycobacterium tuberculosis purified protein derivative (ppd) skin test for healthcare workers (hcws).200314649769
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