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The microbiology "unknown" misadventure

B Boyer1, K J DeBenedictis, R Master

  • 1Reading Hospital and Medical Center, Pennsylvania 19612, USA.

American Journal of Infection Control
|June 25, 1998
PubMed
Summary
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A nursing student contracted Salmonella paratyphi A from a microbiology lab exercise, highlighting critical laboratory safety lapses. This case underscores the need for strict protocols to prevent accidental pathogen exposure in academic settings.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Public Health

Background:

  • Salmonella paratyphi A is an uncommon pathogen in the United States.
  • Microbiology laboratory exercises present potential risks for pathogen exposure.
  • Accurate identification and susceptibility testing are crucial for patient management.

Observation:

  • A 19-year-old nursing student developed severe gastrointestinal symptoms and fever.
  • Blood cultures confirmed Salmonella paratyphi A infection.
  • The same bacterial strain was identified in a concurrent microbiology lab exercise.

Findings:

  • The patient's infection was epidemiologically linked to a laboratory "unknown" exercise.
  • Identical biochemical reactions and antimicrobial susceptibility patterns were observed.

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  • The student recovered after antibiotic treatment.

    • Implications:

    • Reinforces the necessity of stringent laboratory safety protocols, including prohibiting mouth pipetting and ensuring proper specimen labeling.
    • Highlights the importance of instructor knowledge regarding safety regulations and institutional responsibility for a safe academic environment.
    • Suggests that less virulent organisms could suffice for educational objectives, minimizing patient risk.