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A nosocomial common source outbreak caused by Pseudomonas pickettii
Abstract:
Pseudomonas pickettii, a Gram-negative bacillus which has been recovered rarely from clinical specimens, was isolated from the respiratory tracts of 9 of 29 (31%) pediatric intensive care unit patients. The reservoir of the organism was intrinsically contaminated single dose vials of tracheal irrigant solution. Four additional hospitals in three other states have notified the Centers for Disease Control of respiratory colonization with aerobic nonfermentative Gram-negative organisms and have associated this colonization with the use of the same tracheal irrigant solution. Because of the potential for intrinsic contamination, single dose vials must be added to the list of potentially hazardous environmental agents.
Insights
Pseudomonas pickettii contaminated tracheal irrigant solutions, leading to respiratory infections in pediatric intensive care unit patients. This highlights the risk of intrinsically contaminated single-dose vials as environmental hazards.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- Pseudomonas pickettii is a rare Gram-negative bacillus.
- Healthcare-associated infections pose significant risks to vulnerable patient populations.
Purpose of the Study:
- To identify the source and extent of Pseudomonas pickettii infections in a pediatric intensive care unit.
- To assess the role of tracheal irrigant solutions in patient colonization.
Main Methods:
- Bacterial isolation and identification from patient respiratory tracts.
- Environmental sampling and analysis of tracheal irrigant solutions.
- Epidemiological investigation across multiple healthcare facilities.
Main Results:
- Pseudomonas pickettii was isolated from 31% of pediatric intensive care unit patients.
- The primary reservoir identified was intrinsically contaminated single-dose tracheal irrigant vials.
- Four other hospitals reported similar findings linked to the same irrigant solution.
Conclusions:
- Intrinsically contaminated single-dose vials represent a significant environmental hazard.
- Pseudomonas pickettii outbreaks can be linked to contaminated medical supplies.
- Enhanced vigilance and quality control of pharmaceutical products are crucial to prevent patient infections.