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Applied and Environmental Microbiology, October 2008, p. 5913-5917, Vol. 74, No. 19
0099-2240/08/$08.00+0     doi:10.1128/AEM.00745-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Dissemination of Cronobacter spp. (Enterobacter sakazakii) in a Powdered Milk Protein Manufacturing Facility{triangledown}

N. Mullane,1 B. Healy,1 J. Meade,1 P. Whyte,1 P. G. Wall,2 and S. Fanning1*

Centres for Food Safety & Food-borne Zoonomics, UCD Veterinary Sciences Centre, School of Agriculture, Food Science and Veterinary Medicine,1 School of Public Health & Population Sciences, University College Dublin, Belfield, Dublin 4, Ireland2

Received 30 March 2008/ Accepted 7 July 2008

The microbial contamination of air filters and possible links to contaminated product in a powdered milk protein-processing facility were investigated. Over a 10-month period, seven air filters, the environment, and powdered product were analyzed for the presence of Cronobacter spp. The effects of air filter installation, maintenance, and subsequent dissemination of Cronobacter were investigated. A total of 30 isolates were characterized by pulsed-field gel electrophoresis (PFGE). PFGE revealed the presence of three clonal populations distributed throughout the manufacturing site. This study highlights the need for proper installation of air filters to limit the dissemination of microorganisms into processing sites.

* Corresponding author. Mailing address: Centre for Food Safety, School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland. Phone: (353-1) 716 6082. Fax: (353-1) 716 6091. E-mail: sfanning{at}ucd.ie

{triangledown} Published ahead of print on 18 July 2008.

Applied and Environmental Microbiology, October 2008, p. 5913-5917, Vol. 74, No. 19
0099-2240/08/$08.00+0     doi:10.1128/AEM.00745-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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