Pseudo-outbreak of Mycobacterium chelonae and Methylobacterium mesophilicum caused by contamination of an automated endoscopy washer.

@article{Kressel2001PseudooutbreakOM,
  title={Pseudo-outbreak of Mycobacterium chelonae and Methylobacterium mesophilicum caused by contamination of an automated endoscopy washer.},
  author={Amy Beth Kressel and Francine Kidd},
  journal={Infection control and hospital epidemiology},
  year={2001},
  volume={22 7},
  pages={414-8}
}
OBJECTIVE To evaluate an unusual number of rapidly growing acid-fast bacilli, later identified as Mycobacterium chelonae, and pink bacteria, later identified as Methylobacterium mesophilicum, from fungal cultures obtained by bronchoscopy. DESIGN Outbreak investigation. SETTING An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998. PATIENTS Patients undergoing bronchoscopy July 21 to October 2, 1998. METHODS The infection… CONTINUE READING

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An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998 .
An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998 .
An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998 .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The washers then contaminated the endoscopes and bronchoscopes they were used to disinfect .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998 .
An academic medical center performing approximately 500 bronchoscopies and 4,000 gastrointestinal endoscopies in 1998 .
M. chelonae , M. mesophilicum , gram - negative bacteria , and various molds grew from endoscopes , automated washers , and glutaraldehyde from the washers but not from unopened glutaraldehyde .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
M. chelonae , M. mesophilicum , gram - negative bacteria , and various molds grew from endoscopes , automated washers , and glutaraldehyde from the washers but not from unopened glutaraldehyde .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The infection control department reviewed patient charts and bronchoscopy logs ; obtained cultures of source water , faucets , washers , unopened glutaraldehyde , glutaraldehyde from the washers , and endoscopes ; observed endoscope and bronchoscope cleaning and disinfecting procedures ; reviewed glutaraldehyde monitoring records ; and sent M. chelonae isolates for DNA fingerprinting .
The washers then contaminated the endoscopes and bronchoscopes they were used to disinfect .
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