Journal Article

Multistate Outbreak of <i>Salmonella</i> Typhimurium and Saintpaul Infections Associated with Unpasteurized Orange Juice—United States, 2005

Seema Jain, Sally A. Bidol, Jana L. Austin, Erica Berl, Franny Elson, Mysheika LeMaile Williams, Marshall Deasy, Mária E. Moll, Vickie Rea, Jazmin D. Vojdani, Patricia A. Yu, Robert M. Hoekstra, Christopher R. Braden and Michael F. Lynch

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 48, issue 8, pages 1065-1071
Published in print April 2009 | ISSN: 1058-4838
Published online April 2009 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/597397
Multistate Outbreak of Salmonella Typhimurium and Saintpaul Infections Associated with Unpasteurized Orange Juice—United States, 2005

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Background. Infection due to Salmonella species causes an estimated 1.4 million illnesses and 400 deaths annually in the United States. Orange juice is a known vehicle of salmonellosis, for which regulatory controls have recently been implemented. We investigated a nationwide outbreak of Salmonella infection to determine the magnitude of the outbreak and to identify risk factors for infection.

Methods. We identified cases through national laboratory-based surveillance. In a case-control study, we defined a case as infection with Salmonella serotype Typhimurium that demonstrated the outbreak pulsed-field gel electrophoresis pattern in a person with illness onset from 1 May through 31 July 2005; control subjects were identified through random digit dialing.

Results. We identified 152 cases in 23 states. Detailed information was available for 95 cases. The median age of patients was 23 years; 46 (48%) of the 95 patients were female. For 38 patients and 53 age-group matched control subjects in 5 states, illness was associated with consuming orange juice (90% vs. 43%; odds ratio, 22.2; 95% confidence interval, 3.5–927.5). In a conditional logistic regression model, illness was associated with consuming unpasteurized orange juice from company X (53% vs. 0%; odds ratio, 38.0; 95% confidence interval, 6.5-infinity). The US Food and Drug Administration found that company X was noncompliant with the juice Hazard Analysis and Critical Control Point regulation and isolated Salmonella serotype Saintpaul from company X's orange juice.

Conclusions. Unpasteurized orange juice from company X was the vehicle of a widespread outbreak of salmonellosis. Although the route of contamination is unknown, noncompliance with the juice Hazard Analysis and Critical Control Point regulation likely contributed to this outbreak. Pasteurization or other reliable treatment of orange juice could prevent similar outbreaks.

Journal Article.  3904 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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