Abstract
We investigated Bacillus cereus–positive tracheal aspirates from infants on ventilators in a neonatal intensive care unit. Multilocus sequence typing determined a genetic match between strains isolated from samples from a case-patient and from the air flow sensor in the ventilator. Changing the sterilization method for sensors to steam autoclaving stopped transmission.
Highlights
We investigated Bacillus cereus–positive tracheal aspirates from infants on ventilators in a neonatal intensive care unit
B. cereus isolates were forwarded to the Centers for Disease Control and Prevention to be molecularly characterized by using multilocus sequence typing (MLST) [10]
In the Netherlands, an outbreak of B. cereus infections in a pediatric intensive care unit caused by contaminated reusable ventilator air flow sensors was described [7]
Summary
Hoffmaster, Farrin Manian, Cindy Butler, David Byrd, Stephanie Schildknecht, Lina Chavez Hauser, Mary Duncan, Rhonda Ferrett, Dana Evans, and Crystal Talley. Multilocus sequence typing determined a genetic match between strains isolated from samples from a casepatient and from the air flow sensor in the ventilator. There was 1 match between strains isolated from 1 case-patient and the air flow sensor, which was ST73. After implementation of new disinfection and sterilization procedures, no new cases of B. cereus tracheal colonization were identified in the nursery In this cluster, contaminated proximal air flow sensors were the likely source of tracheal colonization with B. cereus in newborn infants, supported by a genetic match by MLST between a strain isolated from 1 case-patient and the contaminated air flow sensor
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