What question did this study set out to answer?

To isolate and identify Mycobacterium avium, M. intracellulare, and M. scrofulaceum across different aquatic ecosystems and determine environmental factors driving their abundance.

February 1, 1992American Review of Respiratory Disease

Epidemiology of Infection by Nontuberculous Mycobacteria: Mycobacterium avium, Mycobacterium intracellulare , and Mycobacterium scrofulaceum in Acid, Brown-Water Swamps of the Southeastern United States and Their Association with Environmental Variables

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Authors

RKRichard A. KirschnerVirginia Tech BPBruce C. ParkerStratton Park Engineering Company (United States)JFJoseph O. FalkinhamVirginia Tech

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Implication

Environmental survey reveals elevated nontuberculous mycobacteria levels in warm, acidic swamp habitats, suggesting these environments serve as primary reservoirs for human infection.

Key Points

To isolate and identify Mycobacterium avium, M. intracellulare, and M. scrofulaceum across different aquatic ecosystems and determine environmental factors driving their abundance.
Collected water, soil, aerosol, and water-droplet samples across multiple seasons from four geographically separate sites: Okefenokee Swamp (GA), Dismal Swamp (VA), Claytor Lake (VA), and Cranberry Glades (WV).
Isolated and identified MAIS organisms while evaluating correlations with water temperature, pH, dissolved oxygen, soluble zinc, humic acid, and fulvic acid.
Significantly higher recovery of MAIS organisms occurred in waters, soils, and aerosols obtained from acidic, brown-water coastal plain swamps compared to other aquatic sites.
High MAIS abundance correlated with warmer temperatures, lower pH, reduced dissolved oxygen, and higher concentrations of soluble zinc, humic acid, and fulvic acid.

Cite This Study

Kirschner et al. (1992) studied this question.

synapsesocial.com/papers/6a70776bfe4101aa97e02ddf https://doi.org/10.1164/ajrccm/145.2_pt_1.271

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Implication

Environmental survey reveals elevated nontuberculous mycobacteria levels in warm, acidic swamp habitats, suggesting these environments serve as primary reservoirs for human infection.

Epidemiology of Infection by Nontuberculous Mycobacteria: Mycobacterium avium, Mycobacterium intracellulare , and Mycobacterium scrofulaceum in Acid, Brown-Water Swamps of the Southeastern United States and Their Association with Environmental Variables

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Key Points

Cite This Study

Epidemiology of Infection by Nontuberculous Mycobacteria: Mycobacterium avium, Mycobacterium intracellulare , and Mycobacterium scrofulaceum in Acid, Brown-Water Swamps of the Southeastern United States and Their Association with Environmental Variables

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