Category Archives: food bourne outbreak

USA – Basil Cyclospora Outbreak Has Sickened 205 in 11 States

Food Poisoning Bulletin Cyclospora_LifeCycle201

The FDA has updated the basil cyclospora outbreak that has now sickened at least 205 people in 11 states. That’s an increase of 73 patients since the last update which was posted on July 25, 2019. Five people have been hospitalized because they are so sick. The basil in question is imported from Mexico by Siga Logistics de RL de CV from Morelos. That facility recalled basil on July 24, 2019.

USA -Outbreak of Listeria Infections Linked to Deli-Sliced Meats and Cheeses

Illustration with a microscope and text reading Investigation Notice

Posted April 17, 2019 at 4:30 PM ET

CDC and several states are investigating a multistate outbreak of Listeria infections linked to deli-sliced meats and cheeses. The U.S. Department of Agriculture’s Food Safety and Inspection Service and the U.S. Food and Drug Administration are monitoring the outbreak.

Latest Outbreak Information
Illustration of a megaphone.
At A Glance

Photo of deli products.

  • A total of 8 people infected with the outbreak strain of Listeria monocytogenes have been reported from 4 states.
    • All 8 people have been hospitalized, and one death has been reported from Michigan.
  • Epidemiologic and laboratory evidence indicates that meats and cheeses sliced at deli counters might be contaminated with Listeria monocytogenes and could make people sick.
  • In interviews, ill people report eating different types and brands of products, including meats and cheeses, purchased from and sliced at deli counters in many different retail locations.
  • The outbreak strain has been identified in samples taken from meat sliced at a deli and from deli counters in multiple stores.
  • A single, common supplier of deli products has not been identified.
  • CDC is not advising that consumers avoid eating products prepared at delis, or that retailers stop selling deli-sliced products.
  • Retailers should clean and sanitize deli slicersExternal frequently and other areas where deli products are prepared, stored, or served to avoid cross contamination.
  • This outbreak is a reminder that people at higher risk for severe Listeria infection should handle deli-sliced meats and cheeses carefully to prevent illness. Pregnant women and their newborns, adults age 65 and older, and people with weakened immune systems are more likely to get sick with listeriosis.

Research – A Bacteriophage Cocktail Eliminates Salmonella Typhimurium from the Human Colonic Microbiome while Preserving Cytokine Signaling and Preventing Attachment to and Invasion of Human Cells by Salmonella In Vitro

Journal of Food Protection


Nontyphoidal Salmonella strains continue to be a major cause of foodborne illness globally. One intriguing approach to reducing the risk of salmonellosis is the direct ingestion of phages targeting Salmonella to enhance natural gut resilience and provide protection during foodborne disease outbreaks. We evaluated the ability of a prophylactically administered bacteriophage cocktail, the foodborne outbreak pill (FOP) targeting Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella, to resolve a Salmonella infection in the Simulator of the Human Intestinal Microbial Ecosystem (SHIME), a simulated gut platform populated by the human intestinal microbiome of healthy donors. The FOP preparation eliminated Salmonella enterica serovar Typhimurium from the colon compartment of the SHIME platform but health-associated metabolites, such as short-chain fatty acids and lactate, remained stable or increased in a donor-dependent manner. In studies of human intestinal cells, pretreatment of Salmonella Typhimurium with the FOP cocktail preserved lipopolysaccharide-stimulated signaling in a Caco-2–THP-1 Transwell system and prevented destruction of the Caco-2 monolayer by Salmonella. Adhesion and invasion of intestinal epithelial cells by Salmonella—a critical factor in Salmonella pathogenesis—was blunted when the bacteria were incubated with the FOP preparation before addition to the monolayer. The FOP phage cocktail was effective for (i) eliminating Salmonella from a simulated human gut without disturbing the indigenous microbiota and (ii) reducing the risk of invasion by Salmonella into the intestinal epithelia. These results suggest that the FOP preparation may be of value for reducing the risk of salmonellosis in humans, e.g., during foodborne disease outbreaks.

Research – Moving Away from Population-Based Case-Control Studies during Outbreak Investigations

Journal of Food Protection


Population-based case-control studies are a time- and labor-intensive component of foodborne outbreak investigations. One alternative is a binomial trial that asks the question “if the likelihood of each case’s having eaten a given food is no different from that of the average person in the population, how often would we find, by chance alone, that x of n (or more) cases would have eaten this food?” Calculating a binomial trial requires background exposure data. We conducted case-control studies and binomial trials in two foodborne outbreaks and compared results. In both outbreaks, using binomial trials we found much less than a 5% probability that the number of cases eating the suspected food vehicle would have occurred by chance. These results were comparable with results of the case-control studies, but with considerably less effort. When background exposure data are available, binomial trials are an efficient way to explore hypotheses that can be further tested by traceback efforts to identify a common source.

  • Population-based case-control studies are time- and labor-intensive.

  • Binomial trials of case exposures produce similar results with less effort.

  • Calculating a binomial trial requires background exposure data.

  • Binomial associations require product tracebacks to identify a common source.

USA – 580 Cyclospora cases in United States – Over 2000 in 2018

Food Poison Journal

On July 25, the FDA announced an investigation into a Cyclospora outbreak linked to imported fresh basil by Siga Logistics from Mexico. Siga

The FDA is recommending consumers not to buy, eat, or serve any fresh basil exported by Siga Logistics and not to consume or serve uncooked items such as pesto or salad that may contain basil from Mexico.

Cyclospora is a parasite composed of one cell, too small to be seen without a microscope.

RASFF Alert – Foodborne Outbreak -Salmonella enterica ser. Enteritidis – Eggs


RASFF – foodborne outbreak suspected to be caused by Salmonella enterica ser. Enteritidis in eggs from Poland in Austria

RASFF Alert -Foodborne Outbreak – Raw Milk Sheep Cheese – Salmonella


RASFF – foodborne outbreak suspected to be caused by and Salmonella enterica ser. Enteritidis (presence /25g) in raw milk sheep’s cheese from France in France