a1 Epidemic Intelligence Service assigned to the Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
a2 Rhode Island Department of Health, Providence, RI, USA
a3 Centers for Disease Control and Prevention, Atlanta, GA, USA
a4 Washington State Department of Health, Olympia, WA, USA
a5 Illinois Department of Public Health, Springfield, IL, USA
a6 Iowa Department of Health, De Moines, IA, USA
a7 Food Safety and Inspection Service, US Department of Agriculture, Atlanta, GA, USA
a8 Food and Drug Administration, Rockville, MD, USA
SUMMARY
In November 2009, we initiated a multistate investigation of Salmonella Montevideo infections with pulsed-field gel electrophoresis pattern JIXX01.0011. We identified 272 cases in 44 states with illness onset dates ranging from 1 July 2009 to 14 April 2010. To help generate hypotheses, warehouse store membership card information was collected to identify products consumed by cases. These records identified 19 ill persons who purchased company A salami products before onset of illness. A case-control study was conducted. Ready-to-eat salami consumption was significantly associated with illness (matched odds ratio 8·5, 95% confidence interval 2·1–75·9). The outbreak strain was isolated from company A salami products from an environmental sample from one manufacturing plant, and sealed containers of black and red pepper at the facility. This outbreak illustrates the importance of using membership card information to assist in identifying suspect vehicles, the potential for spices to contaminate ready-to-eat products, and preventing raw ingredient contamination of these products.
(Received March 07 2012)
(Revised July 11 2012)
(Accepted July 31 2012)
(Online publication August 30 2012)
Key words
Correspondence
c1 Author for correspondence: Dr L. Gieraltowski, 1600 Clifton Road NE, MS A38, Atlanta, GA 30329, USA. (Email: lax2@cdc.gov)