A couple of months later, the case count has doubled, and the only advice PHAC has is wash your fucking hands.
The last two major North American outbreaks of E. coli O121 were in flour, last year, and in sprouts, a few years earlier (please, let it be sprouts, please).
Five months into the outbreak, I’m sure the dedicated Canadian public servants have had time to match the genetic fingerprint of the outbreak strain with the U.S.-based outbreaks, but don’t expect PHAC to answer such simple questions.
They could have done whole genome sequencing in the time it took to have miniions craft a press release that said … nothing.
“The Government of Canada is committed to food safety. The Public Health Agency of Canada leads multi-jurisdictional human health investigations of outbreaks and is in regular contact with its federal and provincial partners to monitor and take collaborative steps to address outbreaks.”
Food irradiation is the treatment of food with a type of radiation energy known as ionizing radiation used to kill microorganisms. In Canada, irradiation has been used on products such as potatoes, onions, wheat and spices. Health Canada has now authorized the use of ionizing radiation to treat fresh and frozen raw ground beef and permit the sale of these products in Canada.
A number of concerns regarding the use of irradiation were brought forth to the attention of Health Canada including the formation of hydrogen peroxide and alkylcyclobutanones. Health Canada states that hydrogen peroxide is relatively unstable and any residues that may remain on the meat after irradiation are expected to break down to water and oxygen during post-irradiation storage. Alkylcyclobutanones are products referred to as “Unique Radiolytic Products” (URPs) that are derived from fat when irradiated and therefore their presence is directly related to the fat content of the food. These URPs are found in extremely small quantities in irradiated foods, in the order of parts per billion. The overall weight of evidence indicates that the very low levels of these compounds found in irradiated beef do not pose a risk to human health.
I currently live in Winnipeg, Manitoba (Canada) and have been asked a number of times what I’m doing here, cause of the ridiculous cold and short summers. Family is everything to me and they all live in Winnipeg. My parents have kindly suggested that if I take away their grandkids, nothing good will come from that scenario. Winnipeg is also home to food microbiologist guru Dr. Rick Holley whom I have had the pleasure of working with in the past on the CFIA modernization project ranking biological hazards with food commodities. Here is Dr. Holley speaking on food irradiation:
It’s about the same amount of effort the boffins at Public Health Agency of Canada put into announcing an outbreak of E. coli O121 that has sickened at least 12 people from B.C. to Newfoundland.
There have been 12 cases of E. coli O121 with a matching genetic fingerprint reported in three provinces: British Columbia (4), Saskatchewan (4), and Newfoundland and Labrador (4). The illness onset dates range from November to December 2016. Four individuals have been hospitalized. These individuals have recovered or are recovering. The investigation into the source of the outbreak is ongoing.
The veal trim and top bottom sirloin (TBS) products were produced and packaged on August 16, 2016, and October 25, 2016. The following products are subject to recall: [View Label (PDF only)]
60-lb. boxes containing “BONELESS VEAL”.
2,387-lb. bin containing “TBS”.
The products subject to recall bear establishment number “EST. 17965” inside the USDA mark of inspection. The “BONELESS VEAL” items were shipped to a warehouse in California and the “TBS” items were shipped to distributor locations in Pennsylvania.
The problem was discovered during routine sample testing. There have been no confirmed reports of illness or adverse reactions due to consumption of these products.
Many clinical laboratories do not test for non-O157 Shiga toxin-producing E. coli (STEC), such as STEC O26 or O45, because they are harder to identify than STEC O157. People can become ill from STECs 2–8 days (average of 3–4 days) after consuming the organism. Most people infected with STEC O26 or O45 develop diarrhea (often bloody), and vomiting. Some illnesses last longer and can be more severe. Infection is usually diagnosed by testing of a stool sample. Vigorous rehydration and other supportive care is the usual treatment; antibiotic treatment is generally not recommended.
Lab tests confirmed 69 people were sickened during the outbreak, with another 37 probable cases. Of the sick people, 22 had symptoms so severe that they required hospitalization. Illness onset dates ranged from June 3 to July 23.
Cilantro is the suspected source of the E. coli based on percentages of sick people who ate menu items made with the fresh produce item. Inspectors collected 12 food items, including cilantro, but none of the food returned positive results for E. coli bacteria. The cilantro was sourced from Illinois and Mexico, according to traceback information provided to the health department.
“Lettuce was associated with illness in both multivariable models but was consumed by only 44 percent of cases,” according to the health department report.
“In comparison, cilantro was consumed by 87 percent of cases, and either cilantro or salsa fresca (which included cilantro) were consumed by 95 percent of cases.”
The report references “several critical violations” observed during a July 1 inspection, such as improper temperatures for several food items including red and green salsas, tequila lime sauce, raw fish, guacamole and cheese. Inspectors also noted improper hand hygiene practices among food handlers.
The immune response against EHEC in cattle cannot always clear the infection as persistent colonization and shedding in infected animals over a period of months often occurs. In previous infection trials, we observed a primary immune response after infection which was unable to protect cattle from re-infection. These results may reflect a suppression of certain immune pathways, making cattle more prone to persistent colonization after re-infection.
To test this, RNA-Seq was used for transcriptome analysis of recto-anal junction tissue and ileal Peyer’s patches in nine Holstein-Friesian calves in response to a primary and secondary Escherichia coli O157:H7 infection with the Shiga toxin (Stx) negative NCTC12900 strain. Non-infected calves served as controls.
In tissue of the recto-anal junction, only 15 genes were found to be significantly affected by a first infection compared to 1159 genes in the ileal Peyer’s patches. Whereas, re-infection significantly changed the expression of 10 and 17 genes in the recto-anal junction tissue and the Peyer’s patches, respectively. A significant downregulation of 69 immunostimulatory genes and a significant upregulation of seven immune suppressing genes was observed.
Although the recto-anal junction is a major site of colonization, this area does not seem to be modulated upon infection to the same extent as ileal Peyer’s patches as the changes in gene expression were remarkably higher in the ileal Peyer’s patches than in the recto-anal junction during a primary but not a secondary infection. We can conclude that the main effect on the transcriptome was immunosuppression by E. coli O157:H7 (Stx−) due to an upregulation of immune suppressive effects (7/12 genes) or a downregulation of immunostimulatory effects (69/94 genes) in the ileal Peyer’s patches. These data might indicate that a primary infection promotes a re-infection with EHEC by suppressing the immune function.
Potential immunosuppressive effects of Escherichia coli O157:H7 experimental infection on the bovine host
BMC Genomics; 2016; 17:1049; DOI: 10.1186/s12864-016-3374-y; Published: 21 December 2016
E. Kieckens, J. Rybarczyk, R. W. Li, D. Vanrompay, and E. Cox
This is why avant-garde jazz saxophonists shouldn’t be responsible for food safety
And that’s nothing against avant-garde jazz saxophonists, although I hate jazz.
But what I really hate is when people make dumb decisions that lead to another’s death, all marketed with the halo of natural, and yet still heralded as some titan of business.
In late Oct. 1996, an outbreak of Escherichia coli O157:H7 was traced to juice containing unpasteurized apple cider manufactured by Odwalla in the northwest U.S. Sixty-four people were sickened and a 16-month-old died from E. coli O157:H7. During subsequent grand jury testimony, it was revealed that while Odwalla had written contracts with suppliers to only provide apples picked from trees rather than drops – those that had fallen to the ground and would be more likely to be contaminated with feces, in this case, deer feces — the company never verified if suppliers were actually doing what they said they were doing. Earlier in 1996, Odwalla had sought to supply the U.S. Army with juice. An Aug. 6, 1996 letter from the Army to Odwalla stated, “we determined that your plant sanitation program does not adequately assure product wholesomeness for military consumers. This lack of assurance prevents approval of your establishment as a source of supply for the Armed Forces at this time.”
Once a huckster, always a huckster.
Stephanie Strom of the N.Y. Times reports for the past 20 years, Greg Steltenpohl, an avant-garde jazz saxophonist turned beverage entrepreneur, has worked to rekindle the magic behind his greatest hit — and make peace with a nightmare that led to an abrupt fall.
Food safety issue: Mr. Steltenpohl started the juice company Odwalla in 1980, selling drinks out of his band’s Volkswagen van in and around San Francisco. Within a few years, the company was a multimillion-dollar business, flying high as one of the first breakout healthy drinks now commonplace in grocery aisles.
Then, in 1996, a child died and dozens were sickened because of contaminated apple juice produced by Odwalla, changing everything. About 90 percent of the company’s revenue evaporated almost overnight in the wake of the outbreak. With the company on the brink of bankruptcy, Mr. Steltenpohl and his partners were forced to sell a controlling interest in Odwalla to private equity firms, the equivalent — to him — of selling out to the devil. Not long after, the company was sold to Coca-Cola.
Dude, you sold out long before that, pushing production and foregoing safety to make bucks.
Quite a fairytale he spins.
“Odwalla took him to the top of the world and then to the bottom,” said Berne Evans, his business partner today. “I don’t think he’s ever gotten over it.”
But now Mr. Steltenpohl, a gentle and avuncular 62, is once again near the center of beverage industry buzz as the head of Califia Farms, a nut milk business that is fast expanding into bottled coffees and other drinks. This time, he is taking advantage of a new trend sweeping the industry, as young beverage companies — empowered by changes in distribution and consumer tastes — are rising and competing successfully with titans like Coca-Cola and PepsiCo.
Only a few years after its founding, in 2012, Califia is on track to ring up $100 million in sales and is adding products at a fast clip. The company is considered one of the hottest young brands in the beverage world, leading to whispers about whether one of the big competitors will soon swoop in with a buyout offer that Mr. Steltenpohl and his partners can’t refuse.
Not this time, he insists. “I’ve had to sell out once,” Mr. Steltenpohl said. “That was enough.”
The story has lots of financial stuff, and how people who know shit about food safety market and sell shit to people who don’t know better, and the people who know shit make billions.
With Trump as President, the time is ripe for a comeback, I guess.
Duane Stanford, the editor of Beverage Digest, said a young beverage company today can buy its flavors from a flavor house, branding expertise from a branding expert and manufacturing from a producer on contract.
“You have this situation where these companies can become viable, robust, cash-generating businesses without the help of a big company,” he said. “They’re even getting creative at building independent distribution networks.”
Odwalla came together out of a necessity to eat. After graduating from Stanford with a degree in environmental sciences, Mr. Steltenpohl joined with some friends to start a band called the Stance. He also got hooked on the taste of fresh-squeezed orange juice, which his father made for him.
“We were a band of musicians who weren’t really that accomplished — or popular,” Mr. Steltenpohl said of himself and the band members, who became his partners in Odwalla. “We were broke and starving, and we figured if we started a juice business, we could live off the juice and maybe make a little extra.”
He read a book, “100 Businesses You Can Start For $100,” and the partners invested in a juicer and started making juice. They didn’t even try to break into groceries and convenience stores, instead stocking refrigerators in video stores and laundromats with Odwalla fresh juice each day. “Everyone who was a musician back then was basically living out of a VW bus,” Mr. Steltenpohl said. “We quit living in ours and began selling juice out of the back.”
For most of its early years, the Santa Cruz Community Credit Union financed the company. But as consumers cottoned on to its intensely flavored, wacky mixes of unpasteurized juice, it needed something more.
In October, 1996, a 16-month-old Denver girl drank Smoothie juice manufactured by Odwalla Inc. of Half Moon Bay, California. She died several weeks later; 64 others became ill in several western U.S. states and British Columbia after drinking the same juices, which contained unpasteurized apple cider — and E. coli O157:H7. Investigators believed that some of the apples used to make the cider might have been ins
The brand’s claims about the healthiness came back to haunt it as reporters dug into its failure to heed warnings about food-safety lapses.
Those failures are legendary in the food safety world, and a similar failure for Steltenpohl to say, “(Coke) never saw the enormous potential of the Odwalla brand and instead saw it as just another product in the juice portfolio.”
It’s also a failure for the N.Y Times to not report how those Odwalla failures went straight to the top..
Odwalla’s brand is nothing more than a cautionary food safety fairytale.
I have many.
Maybe Cafia will become one.
The story notes that Steltenpohl is also trying to avoid past mistakes. The plant is equipped with cutting-edge food-safety monitors that share alerts about problems as they happen with the entire senior management team. Josh Butt, who previously oversaw food safety systems at Danone, the big French dairy company, presides over the plant’s operations.
Cutting-edge is a phrase that appeals to investors but means shit to any food safety type.
Cutting corners is this guy’s calling card.
And making a buck.
This is what I wrote at the time:
Sometime in late September 1996, 16-month-old Anna Gimmestad of Denver has a glass of Smoothie juice manufactured by Odwalla Inc. After her parents noticed bloody diarrhea, Anna was admitted to Children’s Hospital on Oct. 16. On 8 November 1996 she died after going into cardiac and respiratory arrest. Anna had severe kidney problems, related to hemolytic uremic syndrome and her heart had stopped several times in previous days.
The juice Anna — and 65 others who got sick — drank was contaminated with E. coli O157:H7, linked to fresh, unpasteurized apple cider used as a base in the juices manufactured by Odwalla. Because they were unpasteurized, Odwalla’s drinks were shipped in cold storage and had only a two-week shelf life. Odwalla was founded 16 years ago on the premise that fresh, natural fruit juices nourish the spirit. And the bank balance: in fiscal 1996, Odwalla sales jumped 65 per cent to $60 million (U.S.). Company chairman Greg Steltenpohl told reporters that the company did not routinely test for E. coli because it was advised by industry experts that the acid level in the apple juice was sufficient to kill the bug.
Who these industry experts are remains a mystery. Odwalla insists the experts were the U.S. Food and Drug Administration. The FDA isn’t sure who was warned and when. In addition to all the academic research and media coverage concerning verotoxigenic E. coli cited above, Odwalla claimed ignorance.
In terms of crisis management — and outbreaks of foodborne illness are increasingly contributing to the case study literature on crisis management — Odwalla responded appropriately. Company officials responded in a timely and compassionate fashion, initiating a complete recall and co-operating with authorities after a link was first made on Oct. 30 between their juice and illness. They issued timely and comprehensive press statements, and even opened a web site containing background information on both the company and E. coli O157:H7. Upon learning of Anna’s death, Steltenpohl issued a statement which said, “On behalf of myself and the people at Odwalla, I want to say how deeply saddened and sorry we are to learn of the loss of this child. Our hearts go out to the family and our primary concern at this moment is to see that we are doing everything we can to help them.”
For Odwalla, or any food firm to say it had no knowledge that E. coli O157 could survive in an acid environment is unacceptable. When one of us called this $60-million-a-year-company with the great public relations, to ask why they didn’t know that E. coli O157 was a risk in cider, it took over a day to return the call. That’s a long time in crisis-management time. More galling was that the company spokeswoman said she had received my message, but that her phone mysteriously couldn’t call Canada that day.
Great public relations; lousy management. What this outbreak, along with cyclospora in fresh fruit in the spring of 1996 and dozens of others, demonstrates is that, vigilance, from farm to fork, is a mandatory requirement in a global food system. Risk assessment, management and communication must be interlinked to accommodate new scientific and public information. And that includes those funky and natural fruit juices.
In sentencing me to jail in 1982, the judge said I had a memory of convenience.
I had said I had a memory of not much.
Spinach and lettuce growers seem to have a memory of not much, given the produce industry’s revisions to the 2006 E. coli O157:H7 outbreak in spinach that killed four and sickened 200.
In October, 1996, a 16-month-old Denver girl drank Smoothie juice manufactured by Odwalla Inc. of Half Moon Bay, California. She died several weeks later; 64 others became ill in several western U.S. states and British Columbia after drinking the same juices, which contained unpasteurized apple cider — and E. coli O157:H7. Investigators believed that some of the apples used to make the cider might have been insufficiently washed after falling to the ground and coming into contact with deer feces.
In the decade between these two watershed outbreaks, almost 500 outbreaks of foodborne illness involving fresh produce were documented, publicized and led to some changes within the industry, yet what author Malcolm Gladwell would call a tipping point — “a point at which a slow gradual change becomes irreversible and then proceeds with gathering pace” (http://en.wikipedia.org/wiki/Tipping_Point) — in public awareness about produce-associated risks did not happen until the spinach E. coli O157:H7 outbreak in the fall of 2006. At what point did sufficient evidence exist to compel the fresh produce industry to embrace the kind of change the sector has heralded since 2007? And at what point will future evidence be deemed sufficient to initiate change within an industry?
In 1996, following extensive public and political discussions about microbial food safety in meat, the focus shifted to fresh fruits and vegetables, following an outbreak of Cyclospora cayetanesis ultimately linked to Guatemalan raspberries that sickened 1,465 in 21 U.S. states and two Canadian provinces (U.S. Centers for Disease Control and Prevention, 1997), and subsequently Odwalla. That same year, Beuchat (1996) published a review on pathogenic microorganisms in fresh fruits and vegetables and identified numerous pathways of contamination.
E. coli O157:H7
E. coli O157:H7
E. coli O157:H7
E. coli O153:H48
E. coli O153:H47
E. coli O157:H7
E. coli O153:H46
E. coli O157:H10
E. coli O153:H49
Table 1. Outbreaks of foodborne illness related to leafy greens, 1992-1996.
By 1997, researchers at CDC were stating that pathogens could contaminate at any point along the fresh produce food chain — at the farm, processing plant, transportation vehicle, retail store or foodservice operation and the home — and that by understanding where potential problems existed, it was possible to develop strategies to reduce risks of contamination. Researchers also reported that the use of pathogen-free water for washing would minimize risk of contamination.
E. coli O157:H9
E. coli O111:H8
E. coli O157:H11
E. coli O157:H7
E. coli O157:H7
E. coli O157:H7
Table 2. 1999 U.S. outbreaks of STEC linked to leafy greens
Yet it would take a decade and some 29 leafy green-related outbreaks before spinach in 2006 became a tipping point.
E. coli O157:H7
E. coli O157:H7
E. coli O157:H8
E. coli O157:H7
E. coli O157:H7
Table 3: Leafy green outbreaks of STEC, 2000 — 2002.
What was absent in this decade of outbreaks, letters from regulators, plans from industry associations and media accounts, was verification that farmers and others in the farm-to-fork food safety system were seriously internalizing the messages about risk, the numbers of sick people, and translating such information into front-line food safety behavioral change.
E. coli O157:H7
E. coli O157:H7
E. coli O157:H7
E. coli O157:H7
Table 4: Leafy green STEC outbreaks, 2003 — 2005.
So why was spinach in 2006 the tipping point?
It shouldn’t have been.
But it lets industry apologists say, how the hell could we known?
Tom Karst of The Packer reports the crisis of confidence in the status quo of produce safety practices arrived with a thud a little more than 10 years ago.
Beginning Sept. 14 and continuing until Sept. 20, 2006, the U.S. Food and Drug Administration issued daily news releases that flatly advised consumers “not to eat fresh spinach or fresh spinach-containing products until further notice.”
The agency had never before issued such a broad warning about a commodity, said Robert Brackett, who in 2006 was director of FDA’s Center for Food Safety and Applied Nutritions. Brackett is now vice president and director of the Institute for Food Safety and Health at the Illinois Institute of Technology,
“In this particular case all we knew (was) that it was bagged leafy spinach, but we had no idea whose it was or where it was coming from,” he said in December of this year.
“It was a very scary couple of days because we had all of these serious cases of hemolytic-uremic syndrome popping up and people getting sick, and it was so widespread across the country.”
The Centers for Disease Control and Prevention reported about half of those who were ill were hospitalized during the 2006 spinach E. coli outbreak.
“It was shocking how little confidence that FDA and consumers had in the produce industry at that moment,” said David Gombas, retired senior vice president of food safety and technology for the Washington, D.C.-based United Fresh Produce Association.
Given the history of outbreaks, the only thing shocking was that the industry continued to expect blind faith.
“For FDA to say ‘Don’t eat any spinach,’ they blamed an entire commodity, and it became very clear to the produce industry at that moment they had to do something to restore public confidence and FDA confidence in the safety of fresh produce,” Gombas said Nov. 30.
“One of the things that was very different and had the greatest impact was the consumer advisory against spinach — period — regardless of where it came from,” said Trevor Suslow, extension research specialist and director of the University of California-Davis Postharvest Technology Center.
The stark warning — immediately followed by steeply falling retail spinach sales — was issued in the midst of a multistate E. coli foodborne illness outbreak eventually linked to Dole brand baby spinach.
The product was processed, packed and shipped by Natural Selection Foods of San Juan Bautista, Calif., which markets the Earthbound Farm brand.
U.S. Department of Agriculture data shows that California’s spinach shipments plummeted from 258,774 cartons in August 2006 to 138,278 cartons in September, a drop of nearly 50%.
Shipping point prices for spinach on the California coast dropped from $8.45-10.45 per carton on Sept. 14 — the day that FDA first issued its advice to avoid for consumers to avoid spinach — to $4.85-6.15 per carton on Sept. 15.
No market was reported by the USDA for the rest of September because supplies were insufficient to quote.
The final update on the 2006 spinach outbreak was published by the CDC in October. By March 2007, the FDA issued its own final report about its investigation on the cause of the outbreak.
The CDC said in October 2006 that 199 persons infected with the outbreak strain of E. coli O157:H7 were reported to CDC from 26 states. Later, the tally of those sickened was raised to 205.
Gombas said the FDA warning in mid-September caused leafy green sales to crash, not fully recovering for nearly a decade.
“There were outbreaks before that, but none of them were as devastating to industry or public confidence as that one.”
The FDA and the California Department of Public Health issued a 51-page report on the extensive investigation into the causes of an E. coli O157:H7 outbreak associated with the contaminated Dole brand baby spinach.
The report said investigators identified the environmental risk factors and the areas that were most likely involved in the outbreak. However, they were unable to definitely determine the source of the contamination.
The investigation explored the source of the spinach in 13 bags containing E. coli O157:H7 isolates that had been collected nationwide from sick customers, according to a summary of the report.
Using the product codes on the bags, and employing DNA fingerprinting on the bacteria from the bags, the investigators were able to match environmental samples of E. coli O157:H7 from one field to the strain that had caused the outbreak, according to the report.
The report said E. coli O157:H7 isolates located on the Paicines Ranch in San Benito had a (pulsed-field gel electrophoresis) pattern indistinguishable from the outbreak strain. The report said the pattern was identified in river water, cattle feces and wild pig feces on the Paicines Ranch, the closest of which was just under one mile from the spinach field.
According to investigators, the sources of the potential environmental risk factors for E.coli contamination at or near the field included the presence of wild pigs and the proximity of irrigation wells and waterways exposed to feces from cattle and wildlife.
From 1995 to 2006, researchers had linked nine outbreaks of E. coli O157:H7 infections to, or near, the Salinas Valley region. But the 2006 spinach outbreak was different.
There were guidelines for growers in 2006, but not a way to make sure growers were following them, said Joe Pezzini, CEO of Ocean Mist Farms, Castroville, Calif.
The inquiry into the Hastings District Council’s request to re-activate a Brookvale Road bore to augment Havelock North’s peak summer water supply retired today with a set of draft recommendations.
Before wrapping up proceedings, inquiry panel chair Lyn Stevens QC thanked the Hawke’s Bay Regional Council (HBRC) and Hastings District Council (HDC) for the efforts they made that resulted in the regional council dropping its prosecution of the Hastings council.
This agreement came after the first day of hearings on Monday, when pressure was applied by the panel to re-consider the charges.
After extensive questioning on Monday, the regional council agreed to withdraw the charges relating to breaches of the Hastings District Council’s resource consent conditions for taking water from Brookvale bores 1 and 2 – opting to instead consider issuing infringement notices.
Mr Stevens said, “The panel has noted a level of defensiveness in some of the evidence filed to date.
“I’m not being critical of any organisation or witness but wish to emphasise the overriding interest with this inquiry is the public interest, while we look to fulfil the terms of reference to determine the possible causes of contamination.”
A set of 16 draft recommendations were issued and Mr Stevens said the joint working group would be an important conduit to implement them.
The aim was to have the bore re-opened at the end of January before Havelock North water use reached peak demand in February.
Among the recommendations was a directive that the working group – comprising representation from HDC, HBRC, the DHB and drinking water assessors – meet regularly and share information of any potential drinking water safety risk.
For at least 12 months from December 12, the bore would receive cartridge filtration, UV and chlorine treatment, and a regime of regular montioring be implemented.
It was also recommended that the HDC draft an Emergency Response Plan before Bore 3 was brought on line.
Six major Shiga toxin producing Escherichia coli (STEC) serogroups: O26, O103, O145, O111, O121, and O45 have been declared as adulterants in federally inspected raw beef in the USA effective June 4th, 2012 in addition to the routinely tested STEC O157: H7. This study tests a real-time multiplex PCR assay and pooling of the samples to optimize the detection and quantification (prevalence and contamination) of six major non-O157 STEC, regardless of possessing Shiga toxins.
To demonstrate the practicality, one large-scale slaughter plant (Plant LS) and one small-scale slaughter plant (Plant SS) located in the Mid-Western USA were sampled, in 2011, before the establishment of 2013 USDA laboratory protocols. Carcasses were sampled at consecutive intervention stations and beef trimmings were collected at the end of the fabrication process. Plant SS had marginally more contaminated samples than Plant LS (p-value 0.08). The post-hide removal wash, steam pasteurization, and lactic acid (≤5%) spray used in Plant LS seemed to reduce the six serogroups effectively, compared to the hot-water wash and 7-day chilling at Plant SS.
Compared to the culture isolation methods, quantification of the non-O157 STEC using real-time PCR may be an efficient way to monitor the efficacy of slaughter line interventions.
Evaluating the efficacy of beef slaughter line interventions by quantifying the six major non-O157 Shiga toxin producing Escherichia coli serogroups using real-time multiplex PCR
Food Microbiology, Volume 63, May 2017, Pages 228-238, DOI: http://dx.doi.org/10.1016/j.fm.2016.11.023
KST Kanankege, KS Anklam, CM Fick, MJ Kulow, CW Kaspar, BH Ingham, A Milkowski, D Döpfer