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Detection of Live Escherichia coli O157:H7 Cells by PMA-qPCR
08:16

Detection of Live Escherichia coli O157:H7 Cells by PMA-qPCR

Published on: February 1, 2014

Four laboratory-associated cases of infection with Escherichia coli O157:H7

Nancy Spina1, Shelley Zansky, Nellie Dumas

  • 1Emerging Infections Program, New York State Department of Health, Room 651 Corning Tower, Empire State Plaza, Albany, NY 12237, USA. nls04@health.state.ny.us

Journal of Clinical Microbiology
|June 16, 2005
PubMed

Insights

Four laboratorians contracted Escherichia coli O157:H7 infections, with DNA analysis confirming the pathogens originated from laboratory samples. Strict adherence to biosafety protocols is crucial for preventing laboratory-acquired infections.

Area of Science:

  • Clinical microbiology
  • Infectious disease epidemiology
  • Occupational health in laboratory settings

Background:

  • Escherichia coli O157:H7 is a significant human pathogen.
  • Clinical laboratorians handle various infectious agents daily.
  • Understanding routes of laboratory-acquired infections (LAIs) is vital for safety.

Observation:

  • Four distinct cases of Escherichia coli O157:H7 infection occurred in laboratorians.
  • Each infected laboratorian worked in a different clinical laboratory.
  • Isolates from infected individuals matched isolates previously handled in their respective labs.

Findings:

  • DNA fingerprinting confirmed indistinguishable genetic profiles between patient isolates and laboratory strains.
  • The temporal and genetic links strongly suggest laboratory acquisition of Escherichia coli O157:H7.
  • These cases highlight potential breaches in biosafety protocols.

Implications:

  • Reinforces the critical need for strict adherence to biosafety practices when handling infectious materials.
  • Underscores the risk of laboratory-acquired infections, even with common pathogens.
  • Emphasizes the importance of robust safety training and oversight for laboratory personnel.

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