NDLI: Multistate outbreak of listeriosis associated with cantaloupe.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Joshi, Manjiri Teitell, Paul Cosgrove, Shaun Gossack, Joe P. Gorny, James R. Imanishi, Maho Mogen, Kathryn M. Duvernoy, Tracy Mccollum, Jeffrey T. Jain, Neena S. Parachini, Susan S. Silk, Benjamin J. Ibraheem, Mam Cronquist, Alicia B. O'connor, Katherine A. Tarr, Cheryl L. Tauxe, Robert V. Neil, Karen P. Joseph, Lavin A. Fogg, Norman W. Spires, Charlotte Jackson, Kelly A. Cantu, Venessa Mahon, Barbara E. Ettestad, Paul
Spatial Coverage	United States
Description	Author Affiliation: McCollum JT ( Epidemic Intelligence Service, Scientific Education and Professional Development Program Office, Centers for Disease Control and Prevention, Atlanta, USA. jeffrey.mccollum@us.army.mil)
Abstract	BACKGROUND: Although new pathogen-vehicle combinations are increasingly being identified in produce-related disease outbreaks, fresh produce is a rarely recognized vehicle for listeriosis. We investigated a nationwide listeriosis outbreak that occurred in the United States during 2011. METHODS: We defined an outbreak-related case as a laboratory-confirmed infection with any of five outbreak-related subtypes of Listeria monocytogenes isolated during the period from August 1 through October 31, 2011. Multistate epidemiologic, trace-back, and environmental investigations were conducted, and outbreak-related cases were compared with sporadic cases reported previously to the Listeria Initiative, an enhanced surveillance system that routinely collects detailed information about U.S. cases of listeriosis. RESULTS: We identified 147 outbreak-related cases in 28 states. The majority of patients (127 of 147, 86%) were 60 years of age or older. Seven infections among pregnant women and newborns and one related miscarriage were reported. Of 145 patients for whom information about hospitalization was available, 143 (99%) were hospitalized. Thirty-three of the 147 patients (22%) died. Patients with outbreak-related illness were significantly more likely to have eaten cantaloupe than were patients 60 years of age or older with sporadic illness (odds ratio, 8.5; 95% confidence interval, 1.3 to ∞). Cantaloupe and environmental samples collected during the investigation yielded isolates matching all five outbreak-related subtypes, confirming that whole cantaloupe produced by a single Colorado farm was the outbreak source. Unsanitary conditions identified in the processing facility operated by the farm probably resulted in contamination of cantaloupes with L. monocytogenes. CONCLUSIONS: Raw produce, including cantaloupe, can serve as a vehicle for listeriosis. This outbreak highlights the importance of preventing produce contamination within farm and processing environments.
ISSN	00284793
Issue Number	10
Volume Number	369
e-ISSN	15334406
Journal	New England Journal of Medicine
Language	English
Publisher	Massachusetts Medical Society (United States)
Publisher Date	2013-09-05
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Cucumis Melo Microbiology Disease Outbreaks Foodborne Diseases Epidemiology Listeria Monocytogenes Isolation & Purification Listeriosis Adolescent Adult Age Distribution Aged Aged, 80 And Over Animals Citrullus Female Humans Infant Infant, Newborn Male Meat Middle Aged Pregnancy Pregnancy Complications, Infectious Sus Scrofa United States Young Adult Journal Article Medicine
Content Type	Text
Resource Type	Article
Subject	Medicine

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