Cluster of Legionellosis Cases Associated with Manufacturing Process, South Carolina, USA, 2022

Evolving technology and the development of new devices that can aerosolize water present a risk for new sources of Legionella bacteria growth and spread within industrial settings. We investigated a cluster of legionellosis among employees of a manufacturing facility in South Carolina, USA, and fou...

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Main Authors: Hani M. Mohamed, Lindsay Zielinski, Abdoulaye Diedhiou, Nakia Clemmons, Jessica C. Smith, Jessica L. Rinsky, Troy Ritter, Melisa Willby, Nancy Burton, Karl Feldmann, Kevin Dunn, Rebecca Whisenhunt, Victoria Greer, Alberto M. Acosta, Mitchell Garber, Claressa E. Lucas, Kelley C. Henderson, Chris Edens, Linda Bell
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2025-01-01
Series:Emerging Infectious Diseases
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Online Access:https://wwwnc.cdc.gov/eid/article/31/1/24-0916_article
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Summary:Evolving technology and the development of new devices that can aerosolize water present a risk for new sources of Legionella bacteria growth and spread within industrial settings. We investigated a cluster of legionellosis among employees of a manufacturing facility in South Carolina, USA, and found 2 unique equipment sources of Legionella bacteria. The cluster of cases took place during August–November 2022; a total of 34 cases of legionellosis, including 15 hospitalizations and 2 deaths, were reported. Legionella pneumophila was isolated from 3 devices: 2 water jet cutters and 1 floor scrubber. L. pneumophila sequence type 36 was identified in environmental isolates and 1 patient specimen, indicating that those devices were the likely source of infection. Remediation was ultimately achieved through the development and implementation of a device-specific water management program. Manufacturing facilities that use aerosol-generating devices should consider maintaining updated Legionella water management programs to prevent Legionella bacterial infections.
ISSN:1080-6040
1080-6059