The CDC, public health and regulatory officials in several states, and the U.S. Food and Drug Administration are investigating a multistate outbreak of Cyclospora infections. As of August 9, 2018 (11am EDT), a total of 436 laboratory-confirmed cases of Cyclospora infection were reported in people who consumed salads from McDonald’s restaurants; the cases were reported by 15 states. Note, the Connecticut, Tennessee, and Virginia case-patients purchased salads while traveling in Illinois; the Florida case-patient purchased a salad while traveling in Kentucky.

Illnesses started on or after May 20, 2018. The median illness onset date is June 29, 2018 (range: May 20 to July 20). Ill people range in age from 14 to 91 years old, with a median age of 53. Sixty-six percent (66%) are female. At least 20 people have been hospitalized; no deaths have been reported.

On July 26, 2018, FDA completed analysis of an unused package of romaine lettuce and carrot mix distributed to McDonald’s by the Fresh Express processor in Streamwood, IL. The analysis confirmed the presence of Cyclospora in that mix. On July 27, 2018, FDA informed Fresh Express of these results.

Fresh Express reported to FDA that the carrots in the mix went to McDonald’s restaurant locations only, and that the romaine lettuce was the only ingredient in the mix that was distributed to other locations. Romaine lettuce from the same lot that was positive for Cyclospora was distributed in pre-made salads and wraps distributed by Caito Foods LLC of Indianapolis, IN. Fresh Express also reported that no romaine lettuce from the lot that was positive for Cyclospora was packaged for direct retail sale to consumers.

On July 30, 2018, The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) issued a public health alert about pre-made salads and wraps containing romaine lettuce that were distributed by Caito Foods LLC of Indianapolis, IN. The pre-made salads and wraps were shipped to distribution centers nationwide. The pre-made salads and wraps were produced July 15 to July 18, 2018 and have a “Best By,” “Enjoy by,” “Best if Sold By,” or “Sell By” date ranging from July 18 through July 23, 2018. See the product labels here. The pre-made salads and wraps have establishment number “EST. 39985” or “P-39985” inside or next to the USDA mark of inspection. See the full list of products, product labels, UPC code numbers, and other identifying information here.

What is Cyclospora?

Cyclospora is a parasite composed of one cell, too small to be seen without a microscope. The organism was previously thought to be a blue-green alga or a large form of cryptosporidium. Cyclospora cayetanensis is the only species of this organism found in humans. The first known human cases of illness caused by cyclospora infection (that is, cyclosporiasis) were first discovered in 1977. An increase in the number of cases being reported began in the mid-1980s, in part due to the availability of better diagnostic techniques. Over 15,000 cases are estimated to occur in the United States each year. The first recorded Cyclospora outbreak in North America occurred in 1990 and was linked to contaminated water. Since then, several cyclosporiasis outbreaks have been reported in the U.S. and Canada, many associated with eating fresh fruits or vegetables. In some developing countries, cyclosporiasis is common among the population and travelers to those areas have become infected as well.

Where does Cyclospora come from?

Cyclospora is spread when people ingest water or food contaminated with infected stool. For example, exposure to contaminated water among farm workers may have been the original source of the parasite in raspberry-associated outbreaks in North America.

Cyclospora needs time (one to several weeks) after being passed in a bowel movement to become infectious. Therefore, it is unlikely that Cyclospora is passed directly from one person to another. It is not known whether or not animals can be infected and pass infection to people.

What are the typical symptoms of Cyclospora infection?

Cyclospora infects the small intestine (bowel) and usually causes watery diarrhea, bloating, increased gas, stomach cramps, and loss of appetite, nausea, low-grade fever, and fatigue. In some cases, vomiting, explosive diarrhea, muscle aches, and substantial weight loss can occur. Some people who are infected with Cyclospora do not have any symptoms. Symptoms generally appear about a week after infection. If not treated, the illness may last from a few days up to six weeks. Symptoms may also recur one or more times. In addition, people who have previously been infected with Cyclospora can become infected again.

What are the serious and long-term risks of Cyclospora infection?

Cyclospora has been associated with a variety of chronic complications such as Guillain-Barre syndrome, reactive arthritis or Reiter’s syndrome, biliary disease, and acalculous cholecystitis. Since Cyclospora infections tend to respond to the appropriate treatment, complications are more likely to occur in individuals who are not treated or not treated promptly. Extraintestinal infection also appears to occur more commonly in individuals with a compromised immune system.

How is Cyclospora infection detected?

Your health care provider may ask you to submit stool specimen for analysis. Because testing for Cyclospora infection can be difficult, you may be asked to submit several stool specimens over several days. Identification of this parasite in stool requires special laboratory tests that are not routinely done. Therefore, your health care provider should specifically request testing for Cyclospora if it is suspected. Your health care provider might have your stool checked for other organisms that can cause similar symptoms.

How is Cyclospora infection treated?

The recommended treatment for infection with cyclospora is a combination of two antibiotics, trimethoprim-sulfamethoxazole, also known as Bactrim, Septra, or Cotrim. People who have diarrhea should rest and drink plenty of fluids. No alternative drugs have been identified yet for people with Cyclospora infection who are unable to take sulfa drugs. Some experimental studies, however, have suggested that ciprofloxacin or nitazoxanide may be effective, although to a lesser degree than trimethoprim-sulfamethoxazole. See your health care provider to discuss alternative treatment options.

How can Cyclospora infection be prevented?

Avoiding water or food that may be contaminated is advisable when traveling. Drinking bottled or boiled water and avoiding fresh ready-to-eat produce should help to reduce the risk of infection in regions with high rates of infection. Improving sanitary conditions in developing regions with poor environmental and economic conditions is likely to help to reduce exposure.

Washing fresh fruits and vegetables at home may help to remove some of the organisms, but Cyclospora may remain on produce even after washing.

Marler Clark, The Food Safety Law Firm, is the nation’s leading law firm representing victims of Cyclospora outbreaks. The Cyclospora Attorneys and Lawyers have represented victims of Cyclospora and other foodborne illness outbreaks and have recovered over $650 million for clients.  Marler Clark is the only law firm in the nation with a practice focused exclusively on foodborne illness litigation.

If you or a family member became ill with a Cyclospora infection after consuming food and you are interested in pursuing a legal claim, contact the Marler Clark Hepatitis A attorneys for a free case evaluation.

Surprised?  I did not think so.  Cattle feces from a CAFO gets into the water supply that is used to irrigate romaine lettuce – what possibly could go wrong?

Of note, the FDA still has not been transparent (except that “romaine [lettuce] from the Yuma growing region as the likely source of contamination”) as to where the romaine was consumed (except for the “Alaskan correctional facility back to a single farm – [Harrison]”).  Nor, has the FDA been transparent what farms grew the romaine, where and who processed it and who shipped it.  The FDA in fact knows most, if not all, of this, but refuses to release the information citing, “trade secrets.”

As the CDC reported in its final assessment of the outbreak on June 28, 2018, there are 210 cases in 36 states: Alabama (3) Alaska (8), Arkansas (1), Arizona (9), California (49), Colorado (3), Connecticut (2), Florida (3), Georgia (5), Idaho (12), Illinois (2), Iowa (1), Kentucky (1), Louisiana (1), Massachusetts (4), Michigan (5), Minnesota (12), Mississippi (1), Missouri (1), Montana (9), Nebraska (1), New Jersey (8), New York (11), North Carolina (1), North Dakota (3), Ohio (7), Oklahoma (1), Oregon (1), Pennsylvania (24), South Dakota (1), Tennessee (3), Texas (4), Utah (1), Virginia (1), Washington (8), and Wisconsin (3). 5 deaths were reported from Arkansas, California, Minnesota (2), and New York.  8 illnesses were reported in Canada linked to the same outbreak.

On August 6, 2018, the FDA posted an update on the status of its ongoing environmental assessment on the likely, what used to be called the “root cause.” The FDA’s update was as follows:

On July 31 and August 1, 2018, the FDA participated in a meeting of the Leafy Greens Food Safety Task Force that was formed in response to the serious outbreak of E. coli O157:H7 associated with romaine lettuce that occurred earlier this year. During the meeting FDA shared preliminary hypotheses from the Environmental Assessment in Yuma to facilitate conversations with state and local officials, industry and local growers on the hypotheses and associated actions necessary to prevent such an outbreak from occurring again.

As FDA has previously stated, samples of canal water have tested positive for the outbreak strain of E. coli. FDA continues to consider that contaminated water coming into contact with produce, either through direct irrigation or other means, is a viable explanation for the pattern of contamination. But other hypotheses were discussed as well. FDA notes that the canal is close to a Concentrated Animal Feeding Operation (CAFO), a facility with a large number of cattle on the premises. The CAFO can hold in excess of 100,000 head of cattle at any one time and the FDA traceback information showed a clustering of romaine lettuce farms nearby.

Our experts continue to work on examining potential links between the CAFO, adjacent water, and geologic and other factors that may explain the contamination and its relationship to the outbreak. Additional sampling activities will be conducted to further explore and narrow down hypotheses in the near future. Our findings will be detailed in a finalized environmental assessment report.

We urge other government and non-government entities, produce growers in the region, and those engaged in managing the canal systems to work with FDA and marshal and deploy resources to achieve our collective food safety goal. Broad engagement from the surrounding community is critical to developing and implementing remediation measures to reduce the potential for another outbreak. We believe local in-depth knowledge and actions are critical in helping resolve this issue in order to protect public health.

The Environmental Assessment report will be made publicly available when complete.

And, then there is this – for those “geographically challenged,” Yuma is near the dark purple in the lower left corner:

To date, we have filed 10 lawsuits and are making great progress tracing back from restaurants and grocery stores that sold the E. coli-tainted romaine in the spring.  And, once the “points of sale” flip the supply chain of the romaine, we are making great progress finding out who brokered the sale and who processed the romaine.  We are making slower process identifying specific farms, but that information is coming. Once we have the names of more farms, we will move back up other chains of distribution identifying additional shippers, brokers, processors and eventually more restaurants and grocery stores.

Having discovery and subpoena power is a great tool for truth.

Fresh Express Statement about Recall of a Limited Number of Cases of Expired Products Not Marked or Labeled for Retail Sale:

At Fresh Express, our top priority is providing consumers with the highest quality and safest fresh lettuce and leafy greens products available.

In its investigation, the US Food and Drug Administration (FDA) took several random samples of products and one sample, yielded a positive result for Cyclospora. Although the sample taken was an already-expired institutional foodservice product, it none-the-less necessitated a precautionary recall by Fresh Express on July 27th of a limited number of cases.

The products recalled were packaged in clear plastic, multi-pound packs that did not display the Fresh Express logo and were not marked or labeled for retail sale to consumers.

The Fresh Express food safety team, along with our outside food safety experts, have collaborated closely with FDA, the US Centers for Disease Control and Prevention and state public health agencies in their outbreak investigations, and we continue to do so. As of now, there is no clear understanding about the contamination pathway or the definitive source of infection.

Fresh Express follows rigid food safety requirements and preventive controls throughout our supply chain that are carefully designed to mitigate against potential health risks. Working together with public health officials, we are hopeful a definitive source of the outbreak clusters will be identified soon.

As of Tuesday July 31, 2018, the Delaware General Health District has received a total of 683 inquiries related to a possible foodborne illness outbreak stemming from the Chipotle located at 9733 Sawmill Parkway. Of those inquiries, staff members have completed over 480 interviews.

The Ohio Department of Health returned initial stool sample results today – all have tested negative for Salmonella, Shigella, E. coli and Norovirus. Further stool testing will be conducted for other pathogens. The food samples are still in the process of being tested for Bacillus Cereus or Clostridium Perfringens in addition to the four diseases listed above that are tested in stool samples.

The Delaware General Health District suggests that you please contact your local health department to file food complaints. Posting on social media and/or a website is not an official complaint. The Health District has also received calls regarding medical attention. Please consult your doctor for all medical needs.

NICD updated this Listeria Outbreak at the end of July.  Of note, the numbers of ill have continued to drop following the recall of Tiger Brands Enterprise Foods polony in March. However, it appears that some of the “recalled” product is still being consumed.  NICD’s partial report is below.

1,060 laboratory-confirmed cases have been reported from 01 January 2017 to 17 July 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 with no new cases of listeriosis reported during the week prior to release of this sitrep (Figure 1). Neonates ≤28 days of age are the most affected age group (42%, 443/1 060), followed by adults aged 15 – 49 years of age (32%, 334/1 060) – Figure 2. Most cases have been reported from Gauteng Province (58%, 614/1 060), followed by Western Cape (13%, 136/1 060) and KwaZulu-Natal (8%, 83/1 060) provinces (Table 1). Final outcome (i.e. death or discharge) is known for 76% (806/1 060) of total cases to date; 27% (216/806) with known outcome died.

Following a recall of the implicated products, the number of cases has steadily decreased. However, it is anticipated that cases could still be reported for the following reasons:

  • The incubation period of listeriosis can be up to 70 days.
  • The implicated products have a long shelf life and it is possible that despite the recall some products have not been removed from retail or consumer’s homes.
  • Cross-contamination at retail and in the home can occur.

Post recall (05 March 2018 to date), all new cases of laboratory-confirmed listeriosis are contacted by IMT members, and a comprehensive food history is obtained. Exposure to food products implicated in the listeria outbreak is determined.

Of 87 post-recall cases, 65 have been interviewed to date.

Of those interviewed, 38/65 (58%) of ill people or their proxy reported consuming polony prior to their illness onset; brands manufactured by Tiger Brands Enterprise Foods were most commonly reported to have been consumed where brand of polony was known.

Prior to 2017, an average of 60 to 80 laboratory-confirmed listeriosis cases per year (approximately 1 per week), were reported in South Africa. In July 2017, an increase in laboratory-confirmed cases of listeriosis was reported to National Institute for Communicable Diseases (NICD) which triggered further investigation. On 05 December 2017, the listeriosis outbreak was declared by the Minister of Health, Dr. Aaron Motsoaledi. The source of the outbreak was identified as ready-to-eat processed meat products manufactured at Tiger Brand’s Enterprise Foods’ Polokwane production facility. A recall of affected products was initiated on 04 March 2018.

Although, McDonalds is linked to nearly 300 illnesses, other illnesses may also be linked as recalls expand.  NOTE – FDA and Fresh Express has not yet named other retailers where product was sold.

Fast Facts from the FDA:

  • The FDA, CDC, along with state and local officials are investigating a multi-state outbreak of cyclosporiasis illnesses likely linked to salads from McDonald’s restaurants.
  • On July 26, 2018, the FDA completed final analysis of an unused package of Fresh Express salad mix containing romaine lettuce and carrots, which had been distributed to McDonald’s. The analysis confirmed the presence of Cyclospora in that sample, though the expiration date for that product, July 19, had already passed. On July 27, the FDA informed Fresh Express of the results.
  • FDA instructed Fresh Express to determine whether potentially contaminated product may still be on the market. Fresh Express reported to FDA that the romaine from the same lot as the positive sample was not packaged for direct retail sale by Fresh Express and had already expired. Fresh Express committed to using recall procedures to inform those companies that received this romaine about the sample result. Fresh Express also reported that carrots used in the mix were only sent to McDonald’s locations.
  • On July 30, 2018, the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) issued a public health alert on beef, pork and poultry salad and wrap products potentially contaminated with Cyclospora that were distributed by Caito Foods LLC, of Indianapolis, IN. The products were produced between July 15 and 18, 2018, with either “Best By,” “Enjoy by,” “Best if Sold By” or “Sell By” dates ranging from July 18 through July 23, 2018. Caito Foods had received notification from Fresh Express that the chopped romaine in these products was being recalled.
  • The CDC reports that 286 people in 15 states have become ill. There have been 11 hospitalizations and no deaths.
  • The investigation is ongoing and the FDA is currently reviewing distribution and supplier information for romaine and carrots.
  • As of July 13, 2018, McDonald’s decided to voluntarily stop selling salads at impacted restaurants in IL, IA, IN, WI, MI, OH, MN, NE, SD, MT, ND, KY, WV, and MO. The company has since reported that it has replaced the supplier of salads in those states. More information can be found in McDonald’s Statement.
  • Consumers who have symptoms of cyclosporiasis should contact their health care provider to report their symptoms and receive care. Most people infected with Cyclospora develop diarrhea, with frequent, sometimes explosive, bowel movements. Other common symptoms include loss of appetite, weight loss, stomach cramps/pain, bloating, increased gas, nausea, and fatigue. Vomiting, body aches, headache, fever, and other flu-like symptoms may be noted. Some people who are infected with Cyclospora do not have any symptoms. If not treated, the illness may last from a few days to a month or longer. Symptoms may seem to go away and then return one or more times (relapse).
  • At this time, we do not have evidence to suggest that this cluster of illnesses is related to the ongoing Cyclospora outbreak linked to Del Monte vegetable trays.

The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) is issuing a public health alert out of an abundance of caution due to concerns about contamination with Cyclospora. The beef, pork and poultry salad and wrap products were distributed by Caito Foods LLC, an Indianapolis, Ind. establishment.

The beef, pork and poultry salad and wrap items were produced between July 15 to 18, 2018, with the either “Best By,” “Enjoy by,” Best if Sold By” or “Sell By” dates ranging from July 18 through July 23, 2018. [View Label (PDF only)]

The complete list of products, product labels, the UPC code numbers and other identifying information can be found here.

The products bear establishment number “EST. 39985 or P-39985” inside or next to the USDA mark of inspection. These items were shipped to distribution centers nationwide.

The problem was discovered when Caito Foods LLC received notification from their lettuce supplier, Fresh Express, that the chopped romaine that is used to manufacture some of their salads and wraps was being recalled.

FSIS is concerned that some product may be in consumers’ refrigerators and that consumers may be at risk due to the length of the Cyclospora incubation period. Consumers who have purchased these products are urged not to consume them. These products should be thrown away or returned to the place of purchase. Caito Foods LLC and FSIS are working together to remove the products from commerce.

Anyone concerned about an illness should contact a health care provider. Cyclospora infection is an illness cause by the intestinal parasite, Cyclospora cayetanensis. The incubation period for Cyclospora ranges from two to 14 days, which would include the dates of July 25 through August 6, 2018. Illnesses might not have been reported yet due to the time it takes between when a person becomes ill and when the illness is reported. For Cyclospora infections this could take up to six weeks.

As of July 24, 2018, 77 people infected with the outbreak strain of Salmonella Adelaide were reported from nine states. A list of the states and the number of cases in each can be found on the Case Count Map page.

Illnesses started on dates ranging from April 30, 2018, to July 2, 2018. Ill people ranged in age from less than 1 year to 97, with a median age of 67. Among ill people, 67% were female. Out of 70 people with information available, 36 (51%) were hospitalized. No deaths were reported.

Epidemiologic and traceback evidence indicated that pre-cut melon supplied by the Caito Foods, LLC of Indianapolis, Indiana was the likely source of this multistate outbreak.

Information collected from stores where ill people shopped indicated that Caito Foods, LLC supplied pre-cut melon to these stores. On June 8, 2018, Caito Foods, LLC recalled fresh-cut watermelon, honeydew melon, cantaloupe, and fresh-cut fruit medley products containing one of these melons that were produced at the Caito Foods facility in Indianapolis, Indiana.

The 2017 list, rechristened the Web 100, includes 50 blogs, 25 law podcasts and 25 tweeters for lawyers to follow. Perennial favorites are honored in the Blawg 100 Hall of Fame.

Some blogs listed over the years are still thriving after a decade or more, while others went dark long ago. Go beyond our annual lists to search thousands of blogs by specialty and location in the ABA Journal Blawg Directory.

What’s the Blawg Hall of Fame?

In 2012, we introduced our inaugural Blawg Hall of Fame class. These are blawgs that we’ve decided will always be among our favorites and so deserve their own listing that we add to each year. The list of best blogs has grown to 55, with five new additions for 2017.

How does the ABA Journal select digital media to include in the annual Web 100?

The Web 100 is compiled by ABA Journal staff and is largely a favorites list. We ask for nominations from our readers through the Web 100 Amici process. Most successful nominees are regularly updated, with original content, opinion and/or analysis. Blogs, podcasts and social media also are on our radar because they tip off the Journal staff to news, or the posts themselves are worthy of coverage.

Marler Blog

Bill Marler has consistently earned a place on our Blawg 100 list, and it’s not just because the tales of food poisoning outbreaks recounted on his blog keep us up at night. We feel he has truly proven how blogs can help lawyers with niche practices become sought-after experts.

Fast Facts of CDC: Surveillance for Foodborne Disease Outbreaks — United States, 2009–2015 Surveillance Summaries / July 27, 2018 / 67(10);1–11:

2009–2015: 5,760 outbreaks that resulted in 100,939 illnesses, 5,699 hospitalizations, and 145 deaths.

Among 2,953 outbreaks with a single confirmed etiology:

  1. Norovirus was the most common cause of outbreaks (1,130 outbreaks [38%]) and outbreak-associated illnesses (27,623 illnesses [41%]).
  2. Salmonella with 896 outbreaks (30%) and 23,662 illnesses (35%).
  3. Outbreaks caused by ListeriaSalmonella, and Shiga toxin-producing Escherichia coli (STEC) were responsible for 82% of all hospitalizations and 82% of deaths reported.

Among 1,281 outbreaks in which the food reported could be classified into a single food category:

  1. Fish were the most commonly implicated category (222 outbreaks [17%]).
  2. Dairy (136 [11%]).
  3. Chicken (123 [10%]).

The food categories responsible for the most outbreak-associated illnesses were:

  1. Chicken (3,114 illnesses [12%]).
  2. Pork (2,670 [10%]).
  3. Seeded vegetables (2,572 [10%]).

Multistate outbreaks comprised only 3% of all outbreaks reported but accounted for 11% of illnesses, 34% of hospitalizations, and 54% of deaths.

Problem/Condition: Known foodborne disease agents are estimated to cause approximately 9.4 million illnesses each year in the United States. Although only a small subset of illnesses are associated with recognized outbreaks, data from outbreak investigations provide insight into the foods and pathogens that cause illnesses and the settings and conditions in which they occur.

Description of System: The Foodborne Disease Outbreak Surveillance System (FDOSS) collects data on foodborne disease outbreaks, which are defined as the occurrence of two or more cases of a similar illness resulting from the ingestion of a common food. Since the early 1960s, foodborne outbreaks have been reported voluntarily to CDC by state, local, and territorial health departments using a standard form. Beginning in 2009, FDOSS reporting was made through the National Outbreak Reporting System, a web-based platform launched that year.

Results: During 2009–2015, FDOSS received reports of 5,760 outbreaks that resulted in 100,939 illnesses, 5,699 hospitalizations, and 145 deaths. All 50 states, the District of Columbia, Puerto Rico, and CDC reported outbreaks. Among 2,953 outbreaks with a single confirmed etiology, norovirus was the most common cause of outbreaks (1,130 outbreaks [38%]) and outbreak-associated illnesses (27,623 illnesses [41%]), followed by Salmonella with 896 outbreaks (30%) and 23,662 illnesses (35%). Outbreaks caused by ListeriaSalmonella, and Shiga toxin-producing Escherichia coli (STEC) were responsible for 82% of all hospitalizations and 82% of deaths reported. Among 1,281 outbreaks in which the food reported could be classified into a single food category, fish were the most commonly implicated category (222 outbreaks [17%]), followed by dairy (136 [11%]) and chicken (123 [10%]). The food categories responsible for the most outbreak-associated illnesses were chicken (3,114 illnesses [12%]), pork (2,670 [10%]), and seeded vegetables (2,572 [10%]). Multistate outbreaks comprised only 3% of all outbreaks reported but accounted for 11% of illnesses, 34% of hospitalizations, and 54% of deaths.

Location: A location of preparation was provided for 5,022 outbreak reports (87%), with 4,696 (94%) indicating a single location. Among outbreaks reporting a single location of preparation, restaurants were the most common location (2,880 outbreaks [61%]), followed by catering or banquet facilities (636 [14%]) and private homes (561 [12%]). Sit-down dining style restaurants (2,239 [48%]) were the most commonly reported type of restaurant. The locations of food preparation with the most outbreak-associated illnesses were restaurants (33,465 illnesses [43%]), catering or banquet facilities (18,141 [24%]), and institutions, such as schools (9,806 [13%]). The preparation location with the largest average number of illnesses per outbreak was institutions (46.5), whereas restaurants had the smallest (11.6).

Outbreaks: Outbreak investigators identified a food in 2,442 outbreaks (42%). These outbreaks resulted in 51,341 illnesses (51%). The food reported belonged to a single food category in 1,281 outbreaks (22%). The food category most commonly implicated was fish (222 outbreaks [17%]), followed by dairy (136 [11%]) and chicken (123 [10%]). The food categories responsible for the most outbreak-associated illnesses were chicken (3,114 illnesses [12%]), pork (2,670 [10%]), and seeded vegetables (2,572 [10%]). Scombroid toxin in fish was the single confirmed etiology and food category pair responsible for the most outbreaks (85), followed by ciguatoxin in fish (72) and Campylobacter in dairy (60). The pathogen-food category pairs that caused the most outbreak-associated illnesses were Salmonella in eggs (2,422 illnesses), Salmonella in seeded vegetables (2,203), and Salmonella in chicken (1,941). In comparison, scombroid toxin and ciguatoxin outbreaks from fish resulted in 519 outbreak-associated illnesses, an average of three illnesses per outbreak. Outbreaks of Salmonella infections from seeded vegetables resulted in an average of 88 illnesses per outbreak, and outbreaks of Salmonella infections from eggs resulted in an average of 78 illnesses per outbreak.

Food Implicated: Several novel food vehicles caused outbreaks during the study period. In 2011, an outbreak of Salmonella serotype Enteritidis infections linked to pine nuts imported from Turkey resulted in 53 illnesses and two hospitalizations. In 2014, an outbreak of Salmonella serotypes Gaminara, Hartford, and Oranienburg in chia seed powder imported from Canada caused 45 illnesses and seven hospitalizations. An outbreak of STEC serogroups O26 and O121 infections that began in 2015 was linked to raw wheat flour produced in the United States; it resulted in 56 illnesses and 16 hospitalizations in 24 states. An outbreak of Salmonella serotype Virchow infections attributable to moringa leaf powder imported from South Africa began in 2015 and caused 35 illnesses and six hospitalizations in 24 states. It was an ingredient of an organic powdered shake mix branded to be used as a meal replacement.

Multistate Outbreaks: Multistate outbreaks comprised only 3% of outbreaks but were responsible for 11% of illnesses, 34% of hospitalizations, and 54% of deaths. Multistate outbreaks involved a median of seven states with a range of two to 45 states in which exposure occurred. The largest of the 177 multistate outbreaks was caused by Salmonella serotype Enteritidis and due to contaminated shell eggs. An estimated 1,939 persons were infected in 10 states beginning in 2010. An outbreak of Salmonella serotype Poona infections attributed to cucumbers in 2015 had the second highest number of illnesses (907 illnesses in 40 states). This outbreak also had the most outbreak-associated hospitalizations (204 [22% of cases]). An outbreak of Salmonella serotype Heidelberg infections attributed to chicken during 2013–2014 had the second most hospitalizations (200 [32% of cases]) and involved persons from 29 states and Puerto Rico. An outbreak of Listeria monocytogenes infections attributed to cantaloupes in 28 states in 2011 had the most deaths (33 [22% of cases]), followed in 2014 by an outbreak in 12 states of Listeria monocytogenes infections attributed to caramel apples, another novel food vehicle (9), in which seven persons (20% of cases) died.

Daniel Dewey-Mattia, MPH; Karunya Manikonda, MPH; Aron J. Hall, DVM; Matthew E. Wise, PhD; Samuel J. Crowe, PhD.

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