| Literature DB >> 26738313 |
Celia Quinn, Alicia Demirjian, Louise Francois Watkins, Sara Tomczyk, Claressa Lucas, Ellen Brown, Natalia Kozak-Muiznieks, Alvaro Benitez, Laurel E Garrison, Jasen Kunz, Scott Brewer, Samantha Eitniear, Mary DiOrio.
Abstract
On July 9, 2013, an outbreak of Legionnaires' disease (LD) was identified at Long-Term Care Facility A in central Ohio. This article describes the investigation of the outbreak and identification of the outbreak source, a cooling tower using an automated biocide delivery system. In total, 39 outbreak LD cases were identified; among these, six patients died. Water samples from a cooling tower were positive for Legionella pneumophila serogroup 1, reactive to monoclonal antibody 2, with matching sequence type to a patient isolate. An electronic control system turned off cooling tower pumps during low-demand periods, preventing delivery of disinfectant by a timed-release system, and leading to amplification of Legionella in the cooling tower. Guidelines for tower maintenance should address optimal disinfection when using automated systems.Entities:
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Year: 2015 PMID： 26738313
Source DB: PubMed Journal: J Environ Health ISSN： 0022-0892 Impact factor: 1.179