The table on page 4 of this article: efaidnbmnnnibpcajpcglclefindmkaj/viewer.html shows a variety of saline levels which eliminate Mycobacteria in culture medium. The most common infectious agents required greater than 5% to eliminate colonies. Those were M. avium, M, intracellulare, M. chimaera and M. abscessus.
Interestingly, TB was eliminated above 3%.
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