Ben Chapman

About Ben Chapman

Dr. Ben Chapman is a professor and food safety extension specialist at North Carolina State University. As a teenager, a Saturday afternoon viewing of the classic cable movie, Outbreak, sparked his interest in pathogens and public health. With the goal of less foodborne illness, his group designs, implements, and evaluates food safety strategies, messages, and media from farm-to-fork. Through reality-based research, Chapman investigates behaviors and creates interventions aimed at amateur and professional food handlers, managers, and organizational decision-makers; the gate keepers of safe food. Ben co-hosts a biweekly podcast called Food Safety Talk and tries to further engage folks online through Instagram, Twitter, Facebook, YouTube and, maybe not surprisingly, Pinterest. Follow on Twitter @benjaminchapman.

Food truck operators need tools to reduce risks – like a handwashing sink

I like a good food truck meal. The experience is less about eating food from a small sweaty kitchen and sitting on the ground and more about ordering something from a small menu that the chef specializes in. A couple of weeks ago I had a fantastic sautéed cauliflower and roasted potato pita from a food truck at a community event.foodtruck

Before eating there I checked out whether they had an inspection grade (because there are some trucks that like to operate incognito, outside the law) and asked how they washed their hands. The chef told me that they have a handwashing sink with running water and a collection tank. I still have to trust that he actually uses it but at least he had the tools.

That’s a bit different from a food truck on the Carnegie Mellon campus. According to the Pittsburgh Post-Gazette, Tartan Express was forced to close following an inspection where they were cited lots of risky things including not having a sink.

The Allegheny County Health Department has cleared the Tartan Express food truck on the Carnegie Mellon University campus to reopen after it was closed earlier this week for multiple food safety violations, including lack of running water.

The truck, which serves Asian food, operates at 5000 Forbes Ave. “No one in the vehicle is able to wash hands when beginning new tasks, after handling money or touching the face or hair,” an inspector wrote this week.

Other violations included holding food at unsafe temperatures and inadequate sanitization.

San Jose restaurant no longer gettin’ shiggy wit it

Marisco’s San Juan #3 restaurant linked to 200 cases of shigellosis is due to be open for business tomorrow according to KCRA. Although a source of the outbreak wasn’t confirmed, the working theory is that an infected food handler was to blame.

The Department of Environmental Health reinspected Marisco’s San Juan #3, which has been closed since Oct. 18, and approved it for reopening after finding it no longer poses a risk to public health from shigella bacteria, officials said.

County officials said the restaurant’s owners voluntarily discarded all food products on site, cleaned and sanitized the facility and retrained all employees in proper food handling methods. Employees who tested negative for shigella are being allowed to return to work.

Health officials determined that an outbreak of illness connected with the restaurant at 205 N. Fourth St. that caused 190 people to become sick was caused by shigella, a contagious diarrhoeal illness.

The source was most likely from an infected food handler at the restaurant who contaminated the entrees with their hands, officials said. But the exact source of the outbreak has not been determined, and officials have said it might never be identified.

Tracing produce helps answer outbreak questions – Chipotle edition

When I was a graduate student investigating food safety in the produce industry, I saw a lot of transactions and product movement while I was in packing sheds. Repacking, trading pallets (“I’m short on product but I need to fill an order”) and cash sales. These transactions are messy, documentation and separation-wise, and provide a challenge to traceability within the supply chain.

Traceability and being able to follow the route that a a supply is part of a good food safety culture. When it works, it allows investigators to find the source of a problem leading to lessons learned.Chipotle

According to WRAL, some folks I know in the North Carolina food safety world are helping out trace produce ingredients identified as the source of 40 cases of E. coli O26 linked to Chipotle restaurants.

When the E. coli outbreak occurred at Chipotle restaurants in the Northwest, tracing the source of the problem started at Food Logiq, a software food safety company in Durham. Food Logiq contracts with companies like restaurants and grocery stores to track fresh fruits, vegetables and other products from the source to where they end up. If there’s a problem—as in the case of Chipolte—Food Logiq’s software can trace it.

“The big thing that we do is proactive data collection,” said Andrew Kennedy, co-founder of Food Logiq. 

“This case label, not only does it have the product, but it has the log code which then points to packaging dates,” Kennedy said. “We know exactly what dates it was packed. We can trace that back to the farm of origin, and that is the key piece of information.”

Ben Chapman, a food safety expert and associate professor at North Carolina State, blogs about food safety issues. He says companies like Food Logiq track vital information about the food supply chain. “The more we can trace these things, and pull that information together, that means we can all build—in our community and food safety community—better tools to help reduce the chances of people getting sick,” Chapman said.

Ciders and juices can cause illnesses; here’s a big list

Every fall since 2010 there’s been at least one juice or cider related outbreak in North America. Some beverages were pasteurized, many weren’t. CiderPic1Right now there are two outbreaks linked to unpasteurized ciders in California and Illinois.

Here’s a list of all the ones we’ve been able to find (going back to 1924) – 84 outbreaks leading to over 3500 illnesses.

Click here to download the entire list.

Screen Shot 2015-11-05 at 3.18.55 PM

 

Show me the data: Chipotle outbreak is caused by in restaurant vegetable processing?

I don’t know about that.

But that’s amateur epidemiologist (and president of Taylor Farms Florida) Leonard Batti’s working theory on the 39 cases of E. coli O26 outbreak linked to Chipotle (via The Packer).

Leonard Batti, president of Orlando-based Taylor Farms Florida, a division of the Salinas, Calif.-based Taylor Fresh Foods Inc., said changes in the foodservice industry likely contributed to the Chipotle outbreak.iWKad22

“It’s a classic example of what’s happening in foodservice today,” he said. “They made a decision a little less than a year ago to move away from fresh-cut and start cutting products in their facilities, somewhere around 1,700 restaurants.

“So basically, almost overnight, we had 1,700 new vegetable processors pop-up around the country. We’ve all been in fast-food restaurants. You never question their focus on food safety. I am not really surprised that we have what’s transpired with Chipotle.”

Uh, what? It sure seems like a supplier issue, not an on-site processing issue. But I’d like to see the data first.

Pumpkin carving gathering linked to noro outbreak

As my kids get older I start to relive my youth. Last week’s Halloweeen festivities reminded me of costume parades, classroom pumpkin carving competitions and seed roasting.

All shared activities, which turnout to be pretty good norovirus sharing grounds.F2XEZKMG1BB7VQI.MEDIUM

According to the Register Guard, over 100 students and teachers at a Eugene, Oregon school were out with norovirus symptoms following pumpkin carving festivities.

One of two pumpkin-carving events held prior to Halloween may have been the cause of a suspected norovirus outbreak at O’Hara Catholic School, Lane County officials say.

The school welcomed students and staff back to class Tuesday following an extended five-day weekend after the outbreak caused at least 100 people to fall ill. School Principal Tammy Conway said about 40 percent of students were absent on Tuesday.

The long weekend came after 16 staff and faculty members of the school on West 18th Avenue called in sick last Thursday, prompting administrators to cancel classes and close the school for the remainder of the week.

Jason Davis, spokesman for Lane County Health and Human Services, said on Tuesday that after ruling out several other potential causes, a pumpkin-related incident could be the culprit.

Davis stressed that a confirmed culprit for the virus has not yet been identified, though a number of different leads have been ruled out, including a staff-wide breakfast.

“A lot of parents just decided to keep their kids home as a precaution, which isn’t really necessary at this point,” he said.

Norovirus is extremely contagious and usually transmitted when someone accidentally gets traces of stool or vomit from an infected person in their mouth, according to Davis. He said the virus is transported primarily by fecal matter, either in food or on hard surfaces, and is not transmitted through the air.

Not quite There’s some nice science out of the NoroCORE project that shows aerosolization is possible.

Scientists Evaluate Food Safety Practices to Help Support Nonprofit Food Pantries

From an NC State press release,

Researchers from North Carolina State University and the University of North Carolina at Chapel Hill have done an in-depth analysis of food safety at nonprofit food pantries that distribute food directly to people in need. While the work has identified shortcomings at many such pantries, the goal was to identify how food safety experts can help these pantries best meet the needs of their clients.Food-Pantry-HEADER-848x477

“We knew that food pantries, in North Carolina and many other states, aren’t regulated the same way that restaurants are, and that pantries are crucial distributors of food to those in need, but we did not have a good understanding of how food safety is practiced at food pantries,” says Ben Chapman, an associate professor of youth, family, and consumer sciences at NC State and senior author of a new paper on the work.

“This is a particularly important issue because research tells us that the people most likely to rely on help from food pantries are also those who have less access to health care to address foodborne illness in the event that they do get sick,” says Ashley Chaifetz, lead author of the paper. Chaifetz completed the research while a doctoral student at UNC-Chapel Hill.

For this study, the researchers examined operating procedures and interviewed managers at 105 food pantries in 12 counties across North Carolina. The researchers found that pantry food safety procedures were often informal.

In many ways, the results were promising.

For example, researchers found that virtually all pantries did a good job of limiting opportunities for cross-contamination and providing adequate handwashing facilities – both of which are incredibly important in reducing food safety risk.

However, the pantry managers lacked full information on storage and handling or did not have available resources to properly store all perishable items. Given the focus on health and poverty, many pantries have increased the amount of fresh produce and perishables they distribute, which require proper handling and refrigeration. But more than 75 percent of pantries didn’t provide volunteers with formal training on how to handle that food safely. Thirty-six percent of pantry managers didn’t have a system in place to obtain information on food safety recalls. Additionally, only 32 of the 105 pantries had a protocol in place on how to determine whether sick volunteers should be allowed to handle food.

“This is not about bashing food pantries, which provide an essential service to their communities on a shoestring budget,” Chapman says. “But we needed to identify areas of concern so that we could find ways to help them protect the communities they serve.

“Pantries are doing a lot of things right. Our goal was to develop tools to help them do even better, and to help protect underserved groups. We need to know where the gaps are to better support this incredibly important and passionate nonprofit sector.”

The research has already been used to develop a suite of free, online resources for food pantries, which has been used by nonprofits across North Carolina – both those that participated in the research and those that did not.

The paper, “Evaluating North Carolina Food Pantry Food Safety–Related Operating Procedures,” was published online Nov. 1 in the Journal of Food Protection. The work was supported by Agriculture and Food Research Initiative grant 2012-68003-30155 from the U.S. Department of Agriculture’s National Institute of Food and Agriculture.

For more information contact Ben Chapman (919 515 8099/benjamin_chapman@ncsu.edu).

Emergency food should be safe food

A few years ago an outbreak linked to a Denver homeless shelter made it into the barfblog new and notable category. Forty folks who depended on the emergency food were affected by violent foodborne illness symptoms after eating donated turkey. Fourteen ambulances showed up and took those most affected to area hospitals.

Volunteering as a food handler at a mission, shelter or soup kitchen and having a good heart and intentions doesn’t automatically lead to safe meals. An understanding of risks and having systems how to reduce them may.

Exposing individuals coping with food security and hunger to risky practices isn’t a good humanitarian approach. Last week KOMO News (Seattle) covered the possible closure of a free meal program for food safety reasons:HPIM3829

Every Thursday, Celeste Wilson whips up some of her best recipes. “They say it tastes very good because it’s Chinese food,” she said with a laugh. “It’s not just soup or salad or sandwich. Something different.”

Wilson is one of dozens of volunteers who makes food at home and then serves it at the Issaquah Community Hall.

As many as 80 people attend the free Thursday lunch as well as volunteer provided dinners, which are served seven days a week to countless people.

The diners come for something they wouldn’t have otherwise – a healthy, home cooked meal. But “home cooked” just got the attention of the Public Health of Seattle-King County, which says meals like these must be prepared in a commercial kitchen by someone with food safety certification.

“We don’t like to think of food in that way of having that potential of being the source that could make us sick. But just because we don’t know that someone has gotten sick, doesn’t mean that someone hasn’t. With food it’s very possible,” said Becky Elias, Manager of Food Protection and Water Recreation Programs at Public Health.

Around the same time as the Denver outbreak, colleague, friend and STEC CAP collaborator Christine Bruhn created a set of food safety materials for folks volunteering with food in their communities. Ashley Chaifetz, a former graduate student in the department of public policy at UNC-Chapel Hill took Christine’s content foundation and went out to the food pantry community to assess infrastructure and current food safety practices to tailor materials to the audience.

The assessment work was published in the November issue of the Journal of Food Protection:

Evaluating North Carolina Food Pantry Food Safety–Related Operating Procedures

Ashley Chaifetz, University of North Carolina at Chapel Hill; Benjamin Chapman, North Carolina State University

Journal of Food Protection

Vol. 78, No. 11, 2015, Pages 2033–2042

DOI: 10.4315/0362-028X.JFP-15-084

Abstract: Almost one in seven American households were food insecure in 2012, experiencing difficulty in providing enough food for all their members due to a lack of resources. Food pantries assist a food-insecure population through emergency food provision, but there is a paucity of information on the food safety–related operating procedures that pantries use. Food pantries operate in a variable regulatory landscape; in some jurisdictions, they are treated equivalent to restaurants, while in others, they operate outside of inspection regimes. By using a mixed methods approach to catalog the standard operating procedures related to food in 105 food pantries from 12 North Carolina counties, we evaluated their potential impact on food safety. Data collected through interviews with pantry managers were supplemented with observed food safety practices scored against a modified version of the North Carolina Food Establishment Inspection Report. Pantries partnered with organized food bank networks were compared with those that operated independently. In this exploratory research, additional comparisons were examined for pantries in metropolitan areas versus nonmetropolitan areas and pantries with managers who had received food safety training versus managers who had not. The results provide a snapshot of how North Carolina food pantries operate and document risk mitigation strategies for foodborne illness for the vulnerable populations they serve. Data analysis reveals gaps in food safety knowledge and practice, indicating that pantries would benefit from more effective food safety training, especially focusing on formalizing risk management strategies. In addition, new tools, procedures, or policy interventions might improve information actualization by food pantry personnel.

Home-canned pumpkin butter is scary

My kids are all geared up for tomorrow’s annual trick-or-treating. They’ve already found the stash of candy we’ve stockpiled for the neighborhood ghouls and are making trades for stuff they don’t even have yet (‘I’ll trade all my Skittles for all of your Twix’).

We’ll hit a couple of Hallowe’en parties this weekend and if there’s home-canned pumpkin butter served on the potluck tables, I’ll be avoiding it.

According to lots of folks in the home canning world, winter squashes like pumpkin are cool to can – in cubed form. The Plainsman has a good science-based discussion of why mashed winter squashes are problematic for safe canning: they are thick and end up with variable pH when acidified.jack_o_lantern_2_by_ericfreitas-d320vg3

“Pumpkin butter recipes often have acid, such as vinegar or lemon juice, added to reduce the pH level below 4.6 which is a level at which the pathogen Clostridium botulinum will grow,” Joan Hegerfeld-Baker, Assistant Professor & SDSU Extension Food Safety Specialist said.

Food safety concerns related to pumpkin butter were studied by the University of Missouri in 1995. “Their research determined that pumpkin butters produced by home canners and small commercial processors in Missouri had extreme variations in pH values. Some pumpkin butters pH values were as high as 5.4, a level that supports the growth of pathogens of concern,” she said.

When the pH of home canned pumpkin butters, with added acid, was tested in South Dakota by SDSU Extension Food Safety Specialists, Hegerfeld-Baker said similar results were observed. “The pH levels of three samples of pumpkin butter sent in by a home food processor ranged from 4.5 to 4.8,” she said.

Pumpkin and squash butters have two inherent risks — pH greater than 4.6 and thick viscosity. “The pH is difficult to control, and the thick viscosity does not allow for good heat penetration when processing in a boiling water bath or pressure canner,” Hegerfeld-Baker said.

In 1989, the USDA Extension Service Published the Complete Guide to Home Canning. This has served as the standard for Home Food Preservation, with recommended and tested home processing techniques. However, in 1994 a revision was made: the only directions for canning pumpkin and winter squash is to cube the squash or pumpkin and process in a pressure canner.