Raw produce-related 2011 listeriosis outbreak investigated

September 5, 2013
Raw produce-related 2011 listeriosis outbreak investigated
The 2011 outbreak illustrated that raw produce, including cantaloupe, can be a vehicle for transmission of listeriosis, according to research published in the Sept. 5 issue of the New England Journal of Medicine.

(HealthDay)—The 2011 outbreak illustrated that raw produce, including cantaloupe, can be a vehicle for transmission of listeriosis, according to research published in the Sept. 5 issue of the New England Journal of Medicine.

Jeffrey T. McCollum, D.V.M., M.P.H., of the U.S. Centers for Disease Control and Prevention in Atlanta, and colleagues conducted multistate epidemiologic, trace-back, and environmental investigations during the listeriosis outbreak that occurred in the United States in 2011. Outbreak-related cases were compared with sporadic cases of listeriosis reported to the Listeria Initiative.

The researchers found 147 outbreak-related cases of listeriosis in 28 states. Most of the patients (86 percent) were aged 60 or older. Almost all patients were hospitalized and 33 patients (22 percent) died. Patients with outbreak-related illness were significantly more likely to have eaten cantaloupe than patients aged 60 years or older with sporadic cases of listeriosis (odds ratio, 8.5). Whole cantaloupes from a single Colorado farm were identified as the source of the outbreak. Unsanitary conditions in the processing facility at the farm probably caused contamination of the fruit with Listeria monocytogenes.

"This outbreak confirms the viability of raw produce, including , as a vehicle for listeriosis and highlights the importance of preventing produce contamination within farm and processing environments," the authors write.

More information: Full Text (subscription or payment may be required)

Related Stories

FDA, CDC investigate listeriosis outbreak's source

September 15, 2011

(AP) -- The Food and Drug Administration is working with the Centers for Disease Control and Prevention to determine the source of contaminated cantaloupe blamed for a multistate listeriosis outbreak.

Colorado farm says Listeria found in cantaloupe

September 15, 2011

(AP) -- The Food and Drug Administration is warning people not to eat cantaloupes from a southeastern Colorado farm after investigators found a contaminated melon in a store, the first time Listeria has been linked to cantaloupe ...

Infected cantaloupes have killed 18 in US

October 4, 2011

Eighteen people have died and 100 people have fallen ill since late July in the United States from eating cantaloupes infected with listeria, health authorities said Tuesday.

US death toll from cantaloupe rises to 23

October 12, 2011

An outbreak of listeria in farm-grown cantaloupes has killed 23 people and sickened 116 more in the United States since late July, health authorities said Wednesday.

Recent U.S. food-linked listeriosis outbreaks shorter

December 29, 2012

(HealthDay)—Compared with earlier outbreaks, more recent food-associated listeriosis outbreaks in the United States have been shorter and affected fewer people, according to research published online Dec. 12 in Emerging ...

Listeria outbreak prompts cheese recall

July 8, 2013

(HealthDay)—A recent listeria outbreak that caused one death and sickened four other people seems to be linked to cheeses made by a Wisconsin firm, the U.S. Centers for Disease Control and Prevention reports.

Recommended for you

Experimental MERS vaccine shows promise in animal studies

July 28, 2015

A two-step regimen of experimental vaccines against Middle East respiratory syndrome (MERS) prompted immune responses in mice and rhesus macaques, report National Institutes of Health scientists who designed the vaccines. ...

Can social isolation fuel epidemics?

July 21, 2015

Conventional wisdom has it that the more people stay within their own social groups and avoid others, the less likely it is small disease outbreaks turn into full-blown epidemics. But the conventional wisdom is wrong, according ...

Lack of knowledge on animal disease leaves humans at risk

July 20, 2015

Researchers from the University of Sydney have painted the most detailed picture to date of major infectious diseases shared between wildlife and livestock, and found a huge gap in knowledge about diseases which could spread ...

IBD genetically similar in Europeans and non-Europeans

July 20, 2015

The first genetic study of inflammatory bowel disease (IBD) to include individuals from diverse populations has shown that the regions of the genome underlying the disease are consistent around the world. This study, conducted ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.