This powerpoint presentation begins by providing a brief overview of the issue of rapidly growing
mycobacteria (RGM), and presents an investigation of an outbreak of M abscessus in a long term care
facility. Specifics of the outbreak investigation included:
M. abscessus infections in ventilator patients;
epidemiology suggested water supply as the
source of infection;
water testing recovered other RGM, not M.
abscessus
(M chelonae, M peregrinum, M mucogenicum,
unidentified species
recovered from multiple faucets over several
samplings). Treatment measures included:
hyperchlorination, 40 ppm hypochlorite;
point-of-use filters, Pall Corporation;
filters installed on four sink faucets; and,
water examined for HPC (heterotrophic
plate count) bacteria and RGM (rapidly
growing mycobacteria). The actual laboratory study of chlorine
disinfection of M abscessus Biofilm
Free Chlorine, pH 7 is presented, with results of M abscessus biofilm grown in drinking water indicating:
cord formation increases chlorine
susceptibility; and,
mycobacteria biofilm tolerates "normal"
chlorine residual. Presentation conclusions indicate that:
chlorine does not control RGM in
healthcare water systems;
point-of-use treatment may be best
preventive measure; and,
improvements needed for RGM
detection and isolation methods. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 22 |
| Published : | 11/01/2008 |
