Tag Archives: salmonella

Sample6 executives, Tim Curran, Jim Godsey and Mike Koeris

Food Safety Testing Must Live Up to Higher Expectations

By Maria Fontanazza
1 Comment
Sample6 executives, Tim Curran, Jim Godsey and Mike Koeris

From sanitation and processing to testing and analysis to transportation and imports, government requirements of companies in the food industry are changing. Many companies are already prepared for the transformation that FSMA will bring. Within food testing and analysis, expectations will be higher than ever. Companies should be able to more accurately and rapidly identify contamination in order to take immediate action. What are some of the biggest concerns in testing and analysis? What changes can we expect? In a roundtable discussion with Sample6 executives, Michael Koeris, Ph.D., founder and vice president of operations, Tim Curran, CEO, and Jim Godsey, vice president of research & development, share their perspective on the hurdles that industry is facing and how innovative technology plays an important role in the future of food safety.

Key trends:

  • Focus in testing shifts from not just testing and recording data, but also analyzing and communicating results. Having data analysis and reporting skills will be a critical function for the next generation of food safety professionals.
  • Be proactive, not reactive. If you’re finding problems at the finished product level, it’s too late.
  • The need for stronger partnerships between industry and government, especially relating to providing industry with the tools to effectively gather and analyze data in a timely manner.

Food Safety Tech: What are the current industry challenges, especially related to advances in pathogen detection technology?

Tim Curran, CEO of Sample6, pathogen detection
Tim Curran, CEO of Sample6

Tim Curran: When I look at food companies and food safety managers, [their jobs] have become harder to do well, instead of easier. The environment in which they’re working is more challenging, and the pressures are increasing. There’s more regulatory scrutiny, whether we talk about FSMA or the regulatory environment [in general], and there are more testing and inspection [expectations].

Second, the nature of the foods that we need make for the U.S. population (and I think it is a trend around the world): Ready-to-eat products. We’re producing products that are more convenient for families where they won’t necessarily have a cook step down the road. The kinds of foods in demand have a higher risk profile.

Third is the globalization of food supplies. Raw materials are coming in from all different directions, and there is an increasing number of shipping points. That creates more pressure, and from a food safety perspective, that is a bad thing.

“It is okay to find positives for Listeria or Salmonella in the appropriate zones that are far away from food contact surfaces. It is inconceivable to have a plant that has no actual bacterial organisms living there.” -Michael KoerisFinally, there’s social media. There’s a lot of scrutiny from the public. Information around any kind of fear or recall is rapidly disseminated.

These factors add up to higher pressure, a higher bar, and a harder job to accomplish—and the tools and methods available to keep the plant safe and food safe are not keeping pace.

Although I think food plants want to test more at the point of contamination, it’s just not possible. Unless they have a sophisticated lab, most food companies ship out samples because enrichment is required. As a result, they’re getting feedback on the safety of their plant and food in two, three, or four days, depending on where they fall as a priority to that outside lab.

Jim Godsey: With FSMA, testing is decentralizing from the larger lab, which is typically staffed with experienced personnel, to the facility where those personnel don’t exist. Having a test with a workflow that can be easily accommodated by someone with a high school education is absolutely critical for the field.

Michael Koeris, Ph.D., founder and vice president of operations, Sample6, pathogen detection
Michael Koeris, Ph.D., founder and vice president of operations

Michael Koeris: Visibility of data is generally extremely poor, because many people touch individual data points or pockets of data. The hand-off between the different groups is usually shaky, and the timeliness of delivering data to the operators has been a huge issue. This has been an opportunity for us: Our control offering is an operating system for environmental control. It’s an open system, so it accepts both our data and other people’s data, enabling visibility across an entire corporate infrastructure. Plant managers and other [users] of these systems can generate timely reports so they can see what is happening on a daily basis.

FST: In considering professional development, what skills are necessary to ensure that employees will be well equipped to address the issues discussed here?

Godsey: The role of the food safety manager becomes a much more critical and challenging role. To support that, they need better tools; they need to know with a high degree of confidence that their facility has been tested, that the testing was done at the proper times and intervals, and that the data has been analyzed in a timely manner. It’s not just assay/analysis [or] reporting results anymore; it’s the holistic review of those results and translating that [information] into whether or not the plant is safe at that point in time.

Koeris: The persona of the food safety manager is changing. They need to see themselves as the brand protection manager. If you have food safety issues, your brand is at risk. We need to empower the food safety manager at the local level to act, remediate and change processes.

Jim Godsey, vice president of research & development, Sample6, pathogen detection
Jim Godsey, vice president of research & development

There also has to be fundamental change in the industry in how results are viewed. Not all tests are created equal. It is okay to find positives for Listeria or Salmonella in the appropriate zones that are far away from food contact surfaces. It is inconceivable to have a plant that has no actual bacterial organisms living there. This is not a pharmaceutical production facility. Setting the wrong goals at the corporate level of zero positives disincentivizes operators to not look hard enough. You have to actually understand the plant and then make sure that you’re safe with regards to your control plan.

FST: How do you expect the final FSMA rules and implementation process will impact industry?

Koeris: Most of the larger food players are already doing what FSMA mandates or will mandate. The medium and smaller processors will have to adapt and change. They have to implement better standards and more standards, more surveillance, and implement more rigorous processes. The [key] is to help them do this on a tight budget.

FSMA has increased awareness of food safety across the supply chain. It is still focused on the processors, but we know it doesn’t stop there; it doesn’t stop at the distributor or the retailer. Food safety has to be throughout that supply chain.

Having an understanding and awareness of all of the challenges that exist downstream—that will [lead to] the real innovation and increase in foods safety.

Salmonella outbreak linked to cucumbers

UPDATE: What is FDA Doing About Salmonella in Cucumbers?

By Food Safety Tech Staff
No Comments
Salmonella outbreak linked to cucumbers

UPDATE: September 9: According to the CDC, 341 people have been reportedly infected with Salmonella from 30 states. Since September 3, the number of cases has increased by 56. Two deaths have now been reported (California and Texas). Andrew & Williamson Fresh Produce has voluntarily recalled all cucumbers sold under the “Limited Edition” label (between August 1 through September 3, 2015).

More information has been posted on the CDC website.

Lawsuits regarding salmonella in cucumbers have already been filed.

–end update—

Across 27 states, an outbreak of Salmonella Poona linked to cucumbers grown in Mexico has led to one death and 53 reported hospitalizations, according to FDA. The agency released an update on Friday with the latest figures and information related to the outbreak and the product.

The product:

  • Cucumbers supplied by Andrew and William Fresh Produce of San Diego
  • Cucumbers grown in Baja, Mexico
  • Referred to as a “slicer” or “American” cucumber
  • Shipped in black, green, yellow cartons that read “Limited Edition Pole Grown Cucumbers”

The Salmonella outbreak (as of 9/3):

  • Where: Alaska (8), Arizona (60), Arkansas (6), California (51), Colorado (14), Idaho (8), Illinois (5), Kansas (1), Louisiana (3), Minnesota (12), Missouri (7), Montana (11), Nebraska (2), Nevada (7), New Mexico (15), New York (4), North Dakota (1), Ohio (2), Oklahoma (5), Oregon (3), South Carolina (6), Texas (9), Utah (30), Virginia (1), Washington (9), Wisconsin (2), and Wyoming (3)
  • Date range: July 3 to August 26, 2015
  • 1 death
  • 53 reported hospitalizations

Additional details are available on FDA’s website, and the agency will provide an update when new information is available.

As with any potential health hazard related to consumption of a food product, FDA is advising consumers not to eat the cucumbers. They are also urging restaurants to ask their suppliers what company supplied their cucumbers.

When Someone Dies, It’s Not Business As Usual

By Maria Fontanazza
2 Comments

Next month Stewart Parnell, the former CEO of Peanut Corporation of America (PCA), is scheduled to be sentenced for his role in a deadly salmonella outbreak involving shipping contaminated peanut products nationwide. Parnell, who could spend the rest of his life in jail, was found guilty on 71 counts, including conspiracy, obstruction of justice and wire fraud. This landmark case sends a strong message about accountability to both industry and consumers, said Darin Detwiler, senior policy coordinator for food safety at STOP Foodborne Illness, at the IAFP 2015 conference in July.

“His actions resulted in technically more deaths than that of Charles Manson,” said Detwiler, who indicated that Parnell is still very much in denial over his role in the salmonella outbreak. “This might be one snapshot—one look at one person in one industry, in one business—but think about how many companies are out there [and] of this mindset—the idea that they’ll never get caught.”

Food companies should be held strictly liable when it comes to consumer safety, ensuring that they take preventive measures so that illness and death never happen. The sentencing of Parnell next month could set a precedent for how future cases involving companies responsible for foodborne illnesses and outbreaks are handled.

Purdue University Wins FDA’s Food Safety Challenge

By Maria Fontanazza
No Comments

Today FDA announced the winner of the 2014 Food Safety Challenge. The Purdue University team snagged the $300,000 grand prize for its physical method for concentrating Salmonella to detectable levels via automated microfiltration. The technique can potentially reduce sample preparation time from 24-48 hours to a two- to three-hour timeframe.

Runner-up  Pronucleotein received $100,000 for its portable device that enables rapid pathogen screening via DNA aptamer-magnetic bead sandwich assays.

For more details about the technology, view Food Safety Tech’s coverage: FDA’s Food Safety Challenge a Big Deal for Agency and Industry.

Ask the Expert: What do processors need for rapid Salmonella detection methods?

By Food Safety Tech Staff
No Comments

Rapid technologies address the trend toward environmental testing versus finished product testing.

During the past decade, incidences of Salmonella have failed to drop, and the pathogen continues to pose a serious problem to the food supply. Meredith Sutzko, Product Manager, Food Pathogens at Romer Labs North America discusses current technology needs for the food industry.

Q: What are processors looking for in Salmonella detection methods?

Sutzko: I think we will see an increase in testing related to the Food Safety Modernization Act, and there’s a trend toward environmental testing as opposed to finished product testing. Instead of waiting to test finished products at the end of a production cycle, we’re finding that processors are taking a lot of environmental samples from the production line in different areas in order to find contamination further upstream so that when they get to the product testing, they have a lot of confidence that the product is going to be pathogen-free.

Processors are looking to identify contamination very early in the process. To do that, they need simple and cost-effective methods, especially ones that will deliver a fast time-to-result and can be used at the production facility so they don’t have to wait to obtain test results. By using test methods on-site, they can immediately take action upon getting the test result.

Q: How is RapidChek® differentiated from other rapid methods currently available?

Sutzko: The RapidChek method is an innovative, simple and easy-to-use test. With this test, we typically focus on the enrichment portion of the rapid method, because if salmonella is present in the environment, it’s going to be present at very low levels. The enrichment portion (or the growth phase), is important to get that pathogen to higher concentrations for detection.

We use innovative bacteriophage technology in our enrichment media. The bacteriophage act as selective agents during enrichment to inhibit the growth of competing microorganisms, which could be present. The phages allow an optimal growth environment for Salmonella, if it’s present, by reducing the growth of these other competitors. It helps to provide a fast time to result. Then we combine the enrichment media with a state-of-the art-lateral flow test, which uses highly purified antibodies that have been optimized for the sensitive and specific detection of Salmonella.

The technology is simple and easy to use. The end user doesn’t need any expensive equipment to run it. The method comes all-inclusive with everything necessary to run it, so there are no additional expenditures on consumables. Producers are able to do a lot more testing using the RapidChek, because it’s so cost effective. If they find contamination or a growth-niche, they can sanitize, take action and do more testing to make sure they’ve gotten rid of the pathogen.

Q: What’s the significance of Salmonella detection right now as it relates to the risk that the pathogen poses to the food supply?

Sutzko: Historically, Salmonella has been associated with meat and poultry. Recently we’ve seen a lot more outbreaks in different types of food products and matrices that historically have not been associated with Salmonella. Also, the food supply is being globalized. We’re receiving a lot of foods from different countries, possibly where their food safety standards are not as stringent as we have in the United States. We’re seeing an increased level of awareness by producers. They look at their suppliers and their raw materials to make sure they’re testing the materials before they put it into their supply chain.

Also with regulations like FSMA, we see retailers driving food safety and quality systems through third-party certification bodies such as GFSI. Retailers are requiring their suppliers to have effective food safety quality management systems in place in order to do business.  These practices will help to ensure safe food is being supplied to the consumer from farm-to-fork.   

Enrichment Time for Salmonella

By Food Safety Tech Staff
No Comments

In less than two weeks, FDA is holding a Demo Day at the Center for Food Safety and Applied Nutrition in Maryland. The agency will be awarding $500,000 to the team that can develop a technique or technology that creates “significant improvements” in the speed at which FDA can detect Salmonella in fresh, minimally processed produce.

A few months ago, Capt. Palmer Orlandi, Ph.D., senior science advisor at FDA’s Office of Veterinary Medicine, describes exactly why FDA is offering such a hefty prize. It can take between three and five days to detect Salmonella in product, and with full serotyping, it can take as long as two to three weeks to obtain results.

Scanning electron micrograph shows a colony of Salmonella typhimurium bacteria. Photo courtesy of CDC, Janice Haney Carr

State of Salmonella: Technology and Industry Trying to Reduce Rates

By Maria Fontanazza
No Comments
Scanning electron micrograph shows a colony of Salmonella typhimurium bacteria. Photo courtesy of CDC, Janice Haney Carr

By 2020, the CDC has targeted a reduction in Salmonella cases at 11.4 per 100,000 people (last year’s rate was 15.4 per 100,000). Considering that the number of cases has not declined in the past 10+ years, regulators and industry will need to work together more closely on utilizing methods and technologies that provide effective pathogen detection.

Scanning electron micrograph shows a colony of Salmonella typhimurium bacteria. Photo courtesy of CDC, Janice Haney Carr
Scanning electron micrograph shows a colony of Salmonella typhimurium bacteria. Photo courtesy of CDC, Janice Haney Carr

It is a well-known fact within the food safety industry that Salmonella is the second most common foodborne illness in the United States, and the bacteria comes in first place in the category of foodborne illnesses that lead to hospitalization or death.  Unfortunately, there has been no change in the number of confirmed infections between the 2006-2008 period and last year, according to the CDC’s Foodborne Diseases Active Surveillance Network (FoodNet) 2014 Food Safety Progress Report

“The major threat Salmonella poses is that its public health impact has remained largely unchanged despite many years of regulatory oversight and technological improvements,” says Evan Chaney, Ph.D., senior manager, scientific affairs at Roka Bioscience. “Reducing the existing public health burden of Salmonella is a complex challenge that will require new and innovative thought, research, and technological developments or processes.”

Each year Salmonella makes its way into the food supply through a variety of sources, sickening more than 1 million people in the United States and costing the country nearly $3.7 billion, according to the USDA. Although it is most commonly found in contaminated animal-derived products, the level of serious outbreaks over the past few years is cause for concern, as the bacteria have appeared in processed foods such as peanut butter and fresh produce, including cucumbers, cantaloupes, alfalfa sprouts and jalapeno peppers.

USDA’s Food Safety and Inspection Service (FSIS) proposed federal measures in January to lower the rate of Salmonella in poultry, including a pathogen reduction performance standard for chicken parts, and ground chicken and turkey. FSIS began the sample project for raw chicken parts in March (only for firms that produce more than 1,000 lbs of chicken parts daily) and a verification testing program for poultry carcass inspection, using a moving window of sampling results, in May (view the full Federal Register notice).

Technologies Taking Down Salmonella

Providing rapid pathogen detection for Salmonella in less than 24 hours has been a priority for industry. Companies want to both prevent contaminated foods from entering the market as well as ensure that products can be quickly tested so that they are not sitting in a warehouse for days awaiting results. With this focus comes a need to provide testing in the processing environment.

“I think we will see an increase in testing related to the Food Safety Modernization Act, and there’s a trend toward environmental testing as opposed to finished product testing,” says Meredith Sutzko, Product Manager, Food Pathogens of Romer Labs North America. “Processors are looking to identify contamination very early in the process. To do that, they need simple and cost-effective methods, especially ones that will deliver a fast time-to-result and can be used at the production facility so they don’t have to wait to obtain test results.”

From enzyme immunoassays (EIA) and enzyme-linked immunosorbent assays (ELISA) to PCR assays, there are a large variety of established testing and identification technologies on the market. However, in taking a different approach to lowering the risk of Salmonella from entering the market, companies can employ limits testing as an additional tool to verify process control within a production shift. Salmonella limits testing is a semi-quantitative method that provides a “positive” or “no-go” result based on initial contamination levels of a sample, and does so within a day.

Limits testing provides a semi-quantitative approach to lowering Salmonella levels.   Image courtesy of Roka Bioscience
Limits testing provides a semi-quantitative approach to lowering Salmonella levels.
Image courtesy of Roka Bioscience

“A key difference in this testing approach is the utilization of a pathogen test as a means of process control or intervention, an example of a tool utilized in a new manner,” says Chaney, adding that in most cases, pathogen testing is conducted on finished product or on lots of product in concordance with COA requirements. While it is important to provide results that indicate both qualitative (presence or absence) and quantitative (estimates concentration), having insight into actual concentration levels provides another layer of risk mitigation. “We need tools to help us understand what Salmonella loads are in the system in a rapid manner so that action can be taken. This is the purpose of limits testing.”

As a case example of limits testing being used in the field, Cargill asked Roka Bioscience to develop a limits-based approach for testing its ground turkey for Salmonella. Roka was required to provide Salmonella detection levels at about 1 CFU/g in a 375 g sample size of ground meat in less than eight hours (total time to result). Roka successfully developed the limits application, and Cargill now uses the tool to make product disposition decisions prior to shipping its ground turkey. Roka is also looking at other areas in which limits testing can be used, from the pre-harvest to live production environments.

Calling on industry to push harder to innovate in foodborne pathogen detection, FDA announced its 2014 Food Safety Challenge last fall. The agency is offering a hefty prize—$500,00—to the team that can develop a technique or technology that creates “significant improvements” in the speed at which FDA can detect Salmonella in fresh, minimally processed produce. The finalists, announced last month, have received $20,000 to further develop their concepts and are being mentored by FDA in food safety and pathogen testing.

Technology contenders for the challenge include:

  • A handheld magnetoelastic biosensor and surface-scanning detector that can be passed over food to detect surface contamination. The portable device can be used both in a process facility as well as remote locations in which produce is being harvested and delivers results in minutes, according to the team’s leader, Bryan Chin, director of the Auburn University Detection and Food Safety Center.
  • Patented high-throughput technology for capturing Salmonella in large sample volumes. Developed by UC Davis School of Veterinary Medicine and scientists from Mars, Inc., the test uses fluidized bed technology to detect bacteria in less than four hours and presents potential for larger food processors. View the UC Davis video
  • DNA aptamer-magnetic bead sandwich assay, for use with a handheld florescence reader. Developers of the assay are from Pronucleotein, Inc. and Xgenex
  • Method for concentrating salmonella to detectable levels using automated microfiltration, developed by Purdue University.
  • Portable system for multiplexed detection of foodborne pathogens in microfluidic biochips through isothermal DNA amplification and electrical detection, developed by University of Illinois and Purdue University.

On July 7, FDA is holding a Demo Day at the Center for Food Safety and Applied Nutrition in Maryland where the finalists will present their refined concepts to judges from the FDA, USDA, and CDC, and a live audience. The winner of the Food Safety Challenge will also be announced sometime next month.

Risk Assessment in Pathogen Testing Methods

By Food Safety Tech Staff
No Comments

A Certificate of Analysis (COA) provides a level of confidence in the quality and purity of its product. Companies should take this document a step further and assess what the results mean. Using Failure Modes and Effects Analysis (FMEA) can help a company identify, quantify and assess risks associated with pathogen detection methods, giving them the background information they need to trust the results. FMEA can help companies understand the differences between testing methods by individually identifying the risks associated with each method on its own. Maureen Harte, President and CEO at HartePro Consulting, and Lean Six Sigma Master Black Belt, talks about the challenges a company faces when assessing results on a Certificate of Analysis and the role of FMEA.

FST Soapbox

Recent recalls: Glass in Baby Food, Staphylococcal Enterotoxin Contaminated Pork, Salmonella in Whole Foods Macadamia Nuts

By Food Safety Tech Staff
No Comments

The latest recalls are affecting Beech-Nut Nutrition, B & R Meat Processing, and Whole Foods Market.

Whole Foods Market recalls packaged raw macadamia nuts due to possible salmonella

Whole Foods Market voluntarily recalls packaged raw macadamia nuts due to possible Salmonella contamination. Recalled items were sold in AR, AZ, CA, CO, HI, KS, LA, NM, NV, OK, TX, and UT Whole Foods Market Stores. No illnesses have been reported to-date. Based upon routine testing conducted by an FDA-contracted laboratory, it was determined that the raw macadamia nuts tested positive for Salmonella.

Beech-Nut Nutrition recalls Sweet Potato & Chicken Baby Food Product due to possible glass contamination

Beech-Nut Nutrition recalls approximately 1,920 pounds of baby food products that may be contaminated with small pieces of glass… The baby food product was produced on December 12, 2014: 4-oz. glass jars containing “Stage 2 Beech-Nut CLASSICS sweet potato & chicken. The problem was discovered after the firm received a complaint from a consumer who found a small piece of glass in the product. The company has received a report of an oral injury associated with consumption of these products. FSIS has received no additional reports of injury or illness from consumption of these products.

Beech-Nut responds: “At Beech-Nut, we strive to make baby food with the best ingredients nature has to offer – freshly prepared and packaged in clean, safe and environmentally-friendly packaging. So, when any product of ours falls short of those standards, we take swift action to correct it.”

B & R Meat Processing recalls 2000+ pounds of pork due to possible processing deviation and staphylococcal enterotoxin contamination

The cured and uncured pork items were produced on various dates between August 7, 2014 and April 1, 2015… The problem was discovered when an FSIS inspector was conducting a Food Safety Assessment and observed a processing deviation.

Latest posted recalls from FDA

115 Sickened: Multistate Outbreak of Salmonella Enteritidis Infections Linked to Bean Sprouts

So far, 61 outbreaks have been associated with raw sprouts, sickening at least 11,179.

The U.S. Centers for Disease Control reports this outbreak appears to be over.

barfblog-raw-sprouts-Aug-2014A total of 115 people infected with the outbreak strains of Salmonella Enteritidis were reported from 12 states. Twenty-five percent of ill persons were hospitalized. No deaths were reported.

Collaborative investigation efforts of state, local, and federal public health and regulatory agencies indicated that bean sprouts produced by Wonton Foods, Inc. were the likely source of this outbreak.

In interviews, 61 (72 percent) of 85 ill persons reported eating bean sprouts or menu items containing bean sprouts in the week before becoming ill.

In November 2014, Wonton Foods Inc. agreed to destroy any remaining products while they conducted a thorough cleaning and sanitization and implemented other Salmonella control measures at their firm. The firm resumed shipment of bean sprouts on November 29, 2014.

Contaminated bean sprouts produced by Wonton Foods, Inc. are likely no longer available for purchase or consumption given the maximum 12-day shelf life of mung bean sprouts.

Although this outbreak appears to be over, sprouts are a known source of foodborne illness. CDC recommends that consumers, restaurants, and other retailers always follow food safety practices to avoid illness from eating sprouts.

Be aware that children, older adults, pregnant women, and persons with weakened immune systems should avoid eating raw sprouts of any kind (including alfalfa, clover, radish, and mung bean sprouts).

We count 61 outbreaks associated with raw sprouts, sickening at least 11,179.