Seek and ye shall find: Don’t be bobbing for these apples

Northstar Produce Inc. of St. Louis Park, MN is recalling 33 cases of Granny Smith Size 175ct apples, because a test performed on a sample of the apples indicated the presence of Listeria monocytogenes, Salmonella, and / or Enterohemorrhagic E. coli.

The Granny Smith Size 175ct apples were sold at Mike’s Discount Foods, 230 Osborn Ave., Fridley, MN and Mikes’s Discount Foods, 516 East River Road, Anoka, MN

The apples were sold in tray packs between October 1, 2015 and October 19, 2015

No illnesses have been reported to date.


 

Crab seized for Listeria

At the request of the U.S. Food and Drug Administration and the U.S. Attorney for the District of Massachusetts, U.S. Marshals have seized about 5,000 cases of ready-to-eat frozen Jonah crab products processed by Rome Packing Company Inc. (Rome Packing). FDA investigators determined the products have been prepared, packed and held under unsanitary conditions and may present a risk to human health.

jonah.crabDuring an FDA inspection of Rome Packing in Lakeville, Massachusetts, from November 2014 through January 2015, investigators observed poor sanitary practices and found that the company’s cooking process for crabs did not maintain adequate temperatures to prevent the growth of pathogens such as Listeria monocytogenes (L. mono). FDA investigators collected environmental swabs during the inspection and confirmed the presence of L. mono in the manufacturing area. The presence of L. mono in the processing environment may indicate colonization in other areas of the facility.

“The FDA made several efforts to help Rome Packing correct processes, but the company failed to take adequate corrective measures,” said Melinda K. Plaisier, the FDA’s associate commissioner for regulatory affairs. “In this case, we had to intervene and seize this adulterated food to prevent it from reaching consumers.”

The FDA used a bacterial typing tool called whole genome sequencing (WGS) to link the samples collected in the facility. WGS technology can show the relationship among isolates of bacterial pathogens found in the environment, a food source, or a person who became ill from consuming contaminated food.

That’s a risk management decision: Kroger pulls caramel apples from shelves

In the world of risk analysis the assessors calculate what’s the likelihood of a problem and present different scenarios to risk managers. And the managers weigh the consequences, options and make decisions on what to do. Like not selling unrefrigerated caramel apples anymore (or until risks can be reduced to whatever level they deem acceptable).caramel-apple

According to the Wall Street Journal, yesterday’s publication of listeria growth in caramel apples from Kathy Glass’ group at Wisconsin has led to a swift risk management decision. No more unrefrigerated caramel apples.

Kroger said it made the decision based on new scientific evidence that the product, if left unrefrigerated after being pierced with a stick, could be at risk for the bacterial disease. The grocer said it is acting out of caution after reviewing a study published by the American Society of Microbiology.

Payton Pruett, Kroger’s vice president of food safety, said Kroger believes the health risk is minimal. She (he -ben) said the company is open to carrying the caramel apples again in the future and that it will work with suppliers to reduce the risk of bacterial growth.

 

How investigators cracked the Blue Bell listeria outbreak case

Some good investigative work by CBS News figuring out how a beloved Texas icon could be crass when it came to public health.

blue.bell.jul.15There’s the usual stuff about how workers said the places were dumps, after the outbreak became public, but didn’t say much when they were working there.

Guess everyone needs a paycheck.

Three deaths caused by ice cream tainted by bacteria last spring were part of an outbreak that had been going on for years.

In April, Blue Bell Creameries recalled all of its products in 23 states. The ice cream was contaminated with listeria which can be fatal to people who are ill or have compromised immune systems.

In part two of the investigation, investigators show CBS News how the case of the mystery deaths was solved.

When Megan Davis and her team from the South Carolina Department of Health randomly sampled ten products from a local Blue Bell distribution center in January — the last thing they expected to find was listeria.

“It was unbelievable actually,” said Davis. “We never in a million years thought we’d find a positive sample.”

Two of the ten samples tested positive, but just to be sure, they went back and collected 30 more.

“All 30 of the samples that we tested, tested positive for listeria,” said Davis. “Yes, stunning. A little scary that those products were going to consumers.”

Davis uploaded their findings into Pulsenet, a database of DNA fingerprints the Center for Disease Control monitors to identity outbreaks nationwide.

“The listeria germs found in South Carolina in the ice cream matched illnesses in a hospital in Kansas,” said Dr. Robert Tauxe, deputy director of CDC’s Foodborne Disease Division.

That hospital was Via Christi St. Francis in Wichita. Listeria had sickened five of their patients over the past year, but the hospital couldn’t figure out where it was coming from. The listeria patterns found in South Carolina solved the mystery in Kansas.

Turns out, all five of the patients had been served milkshakes made with Blue Bell ice cream.

In mid-February, Blue Bell quietly pulled all the ice cream made on the machine that had produced the ice cream testing positive in South Carolina, citing a quality issue. But Via Christi still had plenty of other Blue Bell products in its freezers. The Kansas Department of Health tested 45 of them, and found another hit.

 

It’s the stick: Listeria grows on caramel apples at room temp

A 2014 multistate listeriosis outbreak was linked to consumption of caramel-coated apples, an unexpected and previously unreported vehicle for Listeria monocytogenes. This outbreak was unanticipated because both the pH of apples (<4.0) and the water activity of the caramel coating (<0.80) are too low to support Listeria growth.

caramel.appleIn this study, Granny Smith apples were inoculated with approximately 4 log10 CFU of L. monocytogenes (a cocktail of serotype 4b strains associated with the outbreak) on each apple’s skin, stem, and calyx. Half of the apples had sticks inserted into the core, while the remaining apples were left intact. Apples were dipped into hot caramel and stored at either 7°C or 25°C for up to 11 or 28 days, respectively. Data revealed that apples with inserted sticks supported significantly more L. monocytogenes growth than apples without sticks under both storage conditions.

Within 3 days at 25°C, L. monocytogenes populations increased >3 log10 in apples with sticks, whereas only a 1-log10 increase was observed even after 1 week for caramel-coated apples without sticks. When stored at 7°C, apples with sticks exhibited an approximately 1.5-log10 increase in L. monocytogenes levels at 28 days, whereas no growth was observed in apples without sticks. We infer that insertion of a stick into the apple accelerates the transfer of juice from the interior of the apple to its surface, creating a microenvironment at the apple-caramel interface where L. monocytogenes can rapidly grow to levels sufficient to cause disease when stored at room temperature.

No growth of L. monocytogenes occurred on refrigerated caramel apples without sticks, whereas slow growth was observed on refrigerated caramel apples with sticks. In contrast, significant pathogen growth was observed within 3 days at room temperature on caramel apples with sticks inserted. Food producers should consider interfaces between components within foods as potential niches for pathogen growth.

Growth of Listeria monocytogenes within a Caramel-Coated Apple Microenvironment

doi: 10.1128/mBio.01232-15; 13 October 2015; mBio; vol. 6; no. 5; e01232-15

Kathleen A. Glass, Max C. Golden, Brandon J. Wanless, Wendy Bedale, Charles Czuprynski

http://mbio.asm.org/content/6/5/e01232-15

Maple Leaf Foods blows itself

Eight years after Maple Leaf Foods cold cuts laden with Listeria killed 24 Canadians and sickened another 50, the company now announces, with fanfare, it will require all of its protein, ingredient and packaging suppliers to become food safety certified to a Global Food Safety Initiative (GFSI) standard in 2017.

Audits and inspections are never enough.

Organizations, groups, awards, they’re all designed to blow the insiders.

The families of the victims probably don’t feel they were blown.

Great. Make the data public.

  • More than 225,000 farms and food manufacturing facilities are certified to GFSI recognized standards globally.

No one cares if you kill people.

Maple Leaf is doing a tap-dance to avoid substantive issues.

  • Put a warning label on your cold-cuts, especially for expectant mothers;
  • make your testing results public; and as I frequently remind my daughters.
  • stop dicking around.

Regarding your audit claims, Maple Leaf sucks.

  • safety audits and inspections are a key component of the nation’s food safety system and their use will expand in the future, for both domestic and imported foodstuffs., but recent failures can be emotionally, physically and financially devastating to the victims and the businesses involved;
  • many outbreaks involve firms that have had their food production systems verified and received acceptable ratings from food safety auditors or government inspectors;
  • while inspectors and auditors play an active role in overseeing compliance, the burden for food safety lies primarily with food producers;
  • there are lots of limitations with audits and inspections, just like with restaurants inspections, but with an estimated 48 million sick each year in the U.S., the question should be, how best to improve food safety?
  • audit reports are only useful if the purchaser or  food producer reviews the results, understands the risks addressed by the standards and makes risk-reduction decisions based on the results;
  • there appears to be a disconnect between what auditors provide (a snapshot) and what buyers believe they are doing (a full verification or certification of product and process);
  • third-party audits are only one performance indicator and need to be supplemented with microbial testing, second-party audits of suppliers and the in-house capacity to meaningfully assess the results of audits and inspections;
  • companies who blame the auditor or inspector for outbreaks of foodborne illness should also blame themselves;
  • assessing food-handling practices of staff through internal observations, externally-led evaluations, and audit and inspection results can provide indicators of a food safety culture; and,
  • the use of audits to help create, improve, and maintain a genuine food safety culture holds the most promise in preventing foodborne illness and safeguarding public health.

 

ITALY-G8-G5-AGRICULTURE-FARMAudits and inspections are never enough: A critique to enhance food safety

30.aug.12

Food Control

D.A. Powell, S. Erdozain, C. Dodd, R. Costa, K. Morley, B.J. Chapman

http://www.sciencedirect.com/science/article/pii/S0956713512004409?v=s5

Abstract

Internal and external food safety audits are conducted to assess the safety and quality of food including on-farm production, manufacturing practices, sanitation, and hygiene. Some auditors are direct stakeholders that are employed by food establishments to conduct internal audits, while other auditors may represent the interests of a second-party purchaser or a third-party auditing agency. Some buyers conduct their own audits or additional testing, while some buyers trust the results of third-party audits or inspections. Third-party auditors, however, use various food safety audit standards and most do not have a vested interest in the products being sold. Audits are conducted under a proprietary standard, while food safety inspections are generally conducted within a legal framework. There have been many foodborne illness outbreaks linked to food processors that have passed third-party audits and inspections, raising questions about the utility of both. Supporters argue third-party audits are a way to ensure food safety in an era of dwindling economic resources. Critics contend that while external audits and inspections can be a valuable tool to help ensure safe food, such activities represent only a snapshot in time. This paper identifies limitations of food safety inspections and audits and provides recommendations for strengthening the system, based on developing a strong food safety culture, including risk-based verification steps, throughout the food safety system.

Food Safety Talk 81: Food safety matters every week

Food Safety Talk, a bi-weekly podcast for food safety nerds, by food safety nerds. The podcast is hosted by Ben Chapman and barfblog contributor Don Schaffner, Extension Specialist in Food Science and Professor at Rutgers University. Every two weeks or so, Ben and Don get together virtually and talk for about an hour.  They talk about what’s on their minds or in the news regarding food safety, and popular culture. They strive to be relevant, funny and informative — sometimes they succeed. You can download the audio recordings right from the website, or subscribe using iTunes.

After a brief discussion about Quadrophenia, the guys thankfully decide to not sing this episode.Unknown-3

Ben mentions that the last video store in the Raleigh area is closing. This led to some discussion about the job security of academic careers where Don stated, ‘prediction is very difficult especially about the future.’

Spurred by Ben’s short visit to Baltimore, the guys then discuss how awesome The Wire is.  Don mentions a perspective by David Simon, the Wire’s creator, on the real life situation in Baltimore.  Ben was recently in Baltimore for the Food Safety Summit.  A nod goes out to Brian Saunders for doing a good job of boots on the ground coverage of what’s going on in Baltimore during the Food Safety Summit.

Don recommends Acorn TV for anyone interested in British TV. This subscription service has British programming not typically shown on US TV. At the Acorn website Ben spotted Time Team an archeology reality series that he thinks his kids would love.

This week Ben talks about media interviews and a focus on multiple food safety stories all hitting at the same time. He talked a cutting boards post on barfblog that garnered some attention.  He also fielded inquires regarding the Blue Bell Listeria outbreak .  Ben noted that Blue Bell announced they are recalling all the ice cream.

A tragic botulism outbreak linked to a church potluck in Ohio was also a topic in multiple media outlets. The potluck outbreak was linked to home-canned potatoes but the coverage prompted a side conversation about bot and foil-wrapped baked potatoes.

Looking ahead to future food outbreaks Ben mentions that a bill was introduced in North Carolina to legalize raw milk.  This bill would allow consumers to legally acquire raw milk via a cow share mechanism.  In this article Ben is quoted challenging an inappropriate comparison of raw milk outbreak data by the bill’s sponsor.

In After Dark Don shames Ben for not listening to Roderick on the Line. Again.

– 30 –

Poop in the field

Two new studies assess the risk of various manures in broccoli and spinach respectively.

cow.poop2In 2011 and 2012, trials consisting of experimental plots were carried out to evaluate the presence of pathogenic (Listeria monocytogenes, Salmonella) and prevalence of indicator (Escherichia coli) microorganisms in broccoli fertilized with liquid hog manure or mineral fertilizers and irrigated zero, one, or two times with E. coli–contaminated water.

In 2011, results showed that E. coli contamination in broccoli heads was affected by the interval between irrigation and sampling (P = 0.0236), with a significant decrease between the first and third day following irrigation (P = 0.0064). In 2012, irrigation frequency significantly increased E. coli prevalence in broccoli samples (P = 0.0499). In 2012, E. coli counts in the soil were significantly influenced by the type of fertilizer applied, as plots receiving liquid hog manure showed higher bacterial counts (P = 0.0006). L. monocytogenes was recovered in one broccoli sample, but geno-serogrouping differentiated the isolate from those recovered in manure and irrigation water. The L. monocytogenes serogroup IIA, pulsotype 188 strain was found in six soil samples and in irrigation water applied 5 days before soil sampling.

This study highlights the link between E. coli levels in irrigation water, irrigation frequency, and interval between irrigation and harvest on produce contamination. It also demonstrates that L. monocytogenes introduced into the soil following irrigation can persist for up to 5 days.

In the second study, the authors write that concerns about the microbiological safety of fresh produce have attracted attention in the past three decades due to multiple foodborne outbreaks. Animal manure contaminated with enteric pathogens has been identified as an important preharvest pathogen source.

This study investigated the survival of Salmonella enterica in dust particles of dehydrated turkey manure and how association with manure dust may enhance the survival of salmonellae on leafy greens in the field. The survival of a cocktail of multiple Salmonella serotypes in the dried fecal material of various particle sizes (125 to 500 μm) was examined at varying moisture contents (5, 10, and 15%). Survival times of the pathogen were inversely related to moisture content and particle size of manure dust, with viable Salmonella still detectable for up to 291 days in the smallest particle size (125 μm) with 5% moisture. Association with manure dust particles increased the survival of Salmonella when subjected to UV light both under laboratory conditions and on the surface of spinach leaves in a greenhouse setting.

poop ice creamThe results of this study suggest that aerosolized manure particles could be a potential vehicle for Salmonella dispersal to leafy greens if the microorganism is present in the dry manure.

 

 

Persistence of indicator and pathogenic microorganisms in broccoli following manure spreading and irrigation with fecally contaminated water: field experiment

Journal of Food Protection®, Number 10, October 2015, pp. 1776-1924, pp. 1776-1784(9)

Généreux, Mylène; Breton, Marie Jo; Fairbrother, John Morris; Fravalo, Philippe; Côté, Caroline

http://www.ingentaconnect.com/content/iafp/jfp/2015/00000078/00000010/art00001

 

Survival of Salmonella Enterica in dried turkey manure and persistence on spinach leaves

Journal of Food Protection®, Number 10, October 2015, pp. 1776-1924, pp. 1791-1799(9)

Oni, Ruth A.; Sharma, Manan; Buchanan, Robert L

http://www.ingentaconnect.com/content/iafp/jfp/2015/00000078/00000010/art00003

 

Careful how you cut the cheese

Commission Regulation (EC) No. 2073/2005 established, as a food safety criterion for tolerable levels of Listeria monocytogenes in ready-to-eat foods which do not support the growth of the pathogen or with shelf life below 5 days, a maximum of 100 cfu g−1.

Gorgonzola cheeseBlue-veined cheeses are among these foods because their rinds can be contaminated, and the pathogen can be transferred to the paste during slicing.

The aim of this research was to investigate whether cutting procedures could be responsible for cheese paste contamination.

Considering that the Commission Regulation limit is allowed when the pathogen does not grow during the shelf life, we also wanted to verify whether, in the case of positive dragging, L. monocytogenes was able to grow on cut slices beyond the limit imposed, thereby becoming a risk for consumers during storage at 4 °C.

Gorgonzola cheese was chosen for this investigation. The cutting simulation on artificially inoculated wheel rinds indicated that greater rind contamination corresponded to a higher percentage of contaminated paste samples.

The growth of L. monocytogenes transferred to cut slices was variable relative to the physicochemical characteristics of the cheese, to the contamination level and to the time of storage. In particular, the sweet typology was able to support the growth of L. monocytogenes in the shelf life conditions considered and the quick overcoming of the limit imposed by food safety criteria would not ensure the safety for consumption.

 Cutting procedures might be responsible for Listeria monocytogenes contamination of foods: The case of Gorgonzola cheese

Food Control, Volume 61, March 2016, Pages 54–61

Valentina Bernini, Elena Dalzini, Camilla Lazzi, Benedetta Bottari, Monica Gatti, Erasmo Neviani

http://www.sciencedirect.com/science/article/pii/S0956713515302000

Fortune looks at the business of food safety and Blue Bell

Powell has often used the term, making people sick is bad for business; or as Fortune Magazine alliterates, the food industry has a $55.5 billion problem. Peter Elkend and Beth Kowitt of Fortune published sister pieces on the intersection of food safety and business focusing on Blue Bell’s recent listeria outbreak and re-entry to the marketplace.

Kowitt writes,

Food-borne illness is a giant, expensive challenge for companies big and small—and the surprise is, their exposure to the risk (and the liability when linked to an outbreak) is arguably bigger than ever. “Thirty years ago if you had a little problem, you were not going to get discovered,” says David Acheson, former associate commissioner for foods at the U.S. Food and Drug Administration, who today runs a consulting firm. “Now the chances of getting caught are significant, and it can be the end of your company.”acf7763f-9190-4bd1-8e69-ae99293596d0

For instance, since 2006 investigators have fingered a bacterial strain called E. coli O157:H7 (at one time widely thought to be found only in meats) in bags of baby spinach, in hazelnuts, and in cookie dough. They’ve identified botulism in pasteurized carrot juice and found salmonella in peanut butter, ground pepper, jalapeño peppers, Turkish pine nuts, and pistachios. They’ve discovered hepatitis A virus in pomegranate seeds; cyclospora in bagged salad mix; and Listeria monocytogenes in ice cream.

“I’m skeptical that these are new connections,” says Ben Chapman, associate professor of food safety at North Carolina State University, who runs a website called the Barfblog (I meant new pathogen/food contamination -ben). “It’s stuff that’s always been there, and now we’re looking for it.” That would help explain why FDA-regulated food recalls have more than doubled over the past decade, to 565 last year, according to insurance company Swiss Re—with nearly half related to microbiological contamination. In interviews with more than 30 experts, nearly all said the rise in recalls was less an indicator of deteriorating food safety than it was of our improving capacity to connect the dots between foods and microbes.

Molecular techniques (PFGE to whole genome sequencing) also get a shout out from friend of barfblog, Linda Harris.

Up until the 1990s, most outbreaks we found were in the same geographic location—the church picnic where everyone eats the same bad potato salad and calls in sick the next day. Then new technology enabled scientists to determine the various DNA fingerprints of food-borne bacteria, which were uploaded into a common database. Investigators were suddenly able to link disparate cases of illness by finding bacterial matches. “It revolutionized outbreak investigation,” says Linda Harris, a microbiologist in the department of food science and technology at the University of California at Davis.

Whole genome sequencing is the biggest advance I’ve seen in my 15 years in food safety.

In the Blue Bell piece, Peter Eklund writes,

The episode reveals not only how difficult it is to trace the source of food-borne illness but also what happens when a company is slow to tackle the causes—and doesn’t come clean with its customers. Experts say Blue Bell’s responses this year were an example of “recall creep.” That occurs when executives hope that taking limited action—as the company did five times when informed of findings of listeria—will solve the problem and minimize commercial damage, only to find themselves forced to expand the recall repeatedly. It’s the opposite of Johnson & Johnson’s actions in the 1982 Tylenol-tampering episode, when the brand famously saved its reputation by swiftly recalling every bottle of the medication.

blue-bell-ice-cream-600Eklund and I spoke a lot about Blue Bell’s sharing of information specifics, which I’ve criticized as lacking. When a company is linked to illnesses and deaths and they say stuff like ‘food safety is important to us’ or ‘we’re going to step up what we are doing around microbiolgical sampling, cleaning and sanitation’ or ‘we’re hiring the best’ it often lacks substance. Sure, tell folks what you are doing but more important is pulling back the curtain on how many samples, what they are looking for, how they determined where and what to look for and what they are going to do if they find an issue. That’s what we mean by marketing food safety.

But Eklund quotes Gene Grabowski, a PR consultant involved in Blue Bell’s response as playing the we’re sorry and trust us game,

“In my playbook, you apologize sincerely once and then you move on.” (He has been supplanted by a team from PR giant Burson-Marsteller led by Karen Hughes, who served as a top White House communications adviser to George W. Bush.) “Had the company known then what it knows now,” Grabowski says, “it would have done a full recall of all products earlier than it did.”

Two decades into the world of online discussions, immediate news exchange, and Twitter flame wars and some are still sadly following the apologize and move on approach.