This study examines the water system of a hospital and identifies risk factors and mitigation strategies to combat the spread of Legionella, the cause of Legionnaires’ disease.
The primary risk factor identified is what they call temporary water stagnation. Basically, if a water fixture (sink, shower, etc.) is used infrequently, then it is more likely to be contaminated. A mitigation strategy is to flush water fixtures on a regular schedule. Interestingly, they found that both the hot and cold supplies are equally likely to be contaminated.
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Well that’s it, I’m gonna add compulsive turning on faucets in hospital rooms to the constant compulsive hand washing.