SHOWER source of Mycobacteria....

Discussion in 'Fibromyalgia Main Forum' started by victoria, Mar 2, 2010.

  1. victoria

    victoria New Member

    It never rains but pours... or in this case showers on you...

    non-TB mycobacteria!!!!
    that like plastic showerheads and is resistant to chlorine, in fact it increases with chlorine because of biofilms (are we surprised?)
  2. victoria

    victoria New Member


    The results were very consistent. Sequencing analysis determined that a common resident of showerheads fed by municipal water is Mycobacterium species, and specifically, M. avium and M. gordonae. M. avium is an opportunistic pathogen and a major cause of pulmonary infections by NTM. Even samples that tested negative for Mycobacteria via the 16s gene sequencing experiments were found to be positive when examined using qPCR.

    Mycobacterium spp. DNA predominated in biofilms collected from metropolitan water systems from New York City, Denver , Illinois, and North Dakota. In contrast, water coming though the contaminated showerheads resulted in much lower levels of the Mycobacterium spp. (about 100 fold less).

    The authors speculate that the higher than average levels of Mycobacterium spp. collected from biofilms in showerheads with municipal water as a source is the result of chlorinated cleaning treatments. Mycobacterium has a competitive advantage over the other bacteria due to resistance to chlorine. Indeed, when samples from the Denver area were collected on repeat visits after which the showerhead had been cleaned with bleach, the presence of Mycobacterium spp. increased as compared to the sample collected on the first visit.

    Surprise results?

    Interestingly, well water fed showerheads had no Mycobacterium spp. DNA in the water or showerhead.

    (have to wonder if the wellwater was softened and if/how it was filtered or treated)

    "....It is likely that the greatest amount of aerosolization occurs during the initial flush of water through the showerhead and that after 20 minutes, the samples were extensively diluted."


    It goes on to note that one should let the water run for a bit thru the shower to flush it out... but if it's aerosolized, wouldn't/couldn't it still be hanging around in the air?

    It would also be interesting to do this research in different areas of the country...

  3. victoria

    victoria New Member