McDonald’s tries fresh beef ‘An E. coli outbreak waiting to happen’

In 1982, E. coli O157:H7, was found to be responsible for outbreaks of human illness in Oregon and Michigan after customers at McDonald’s outlets ate contaminated hamburgers, the first outbreaks linked to Shiga-toxin producing E. coli.

mclovin1-300x140McDonald’s changed the way it cooked burgers to largely eliminate the human element and instituted E. coli O157 testing of its suppliers and demanded continuous improvement.

Those who don’t know history are doomed to repeat it, or so the saying goes.

Robert Galbraith of Reuters reports that McDonald’s has been testing fresh, never-frozen beef patties at restaurants in Dallas.

Wall Street analysts have applauded the change, but some McDonald’s franchisees say it’s a food-safety disaster waiting to happen.

In a recent survey by Nomura, two dozen franchisees warned that introducing fresh beef patties nationwide would slow down service and expose the chain to new food contamination risks.

“I have major concerns over food safety and our lack of ability to serve a large number of customers quickly,” one franchisee wrote.

Another wrote, “If we do not handle the meat perfectly there is the opportunity for bacterial invasion of our product.”

One operator brought up the E. coli outbreak that affected 14 Chipotle restaurants across the country last fall, sending the chain’s sales plunging by as much as 30%.

“An uncaring employee [could end up] doing something that puts the entire system at risk,” the franchisee wrote. “We are the lightning rod. Chipotle will be a walk in the park if we have an incident.”

McDonald’s has long relied on an extensive network of suppliers who make, freeze, and ship beef patties to its more than 14,000 restaurants in the US.

mcdonalds-600x800Expanding the fresh beef test — which is currently limited to 14 restaurants in Dallas — would require big changes to its supply chain. The potential for foodborne illnesses is higher when uncooked meat is kept at a temperature above 40 degrees Fahrenheit, according to the USDA.

At the restaurant level, it would be a “massive learning curve for our managers and crew,” one franchisee wrote. “No doubt the biggest change in McDonald’s history. Would be a huge distraction from our ‘turnaround.'”

In the same survey, many McDonald’s franchisees also acknowledged that fresh beef would help improve the fast-food chain’s public image.

“Faster cook times, juicier product, seared product versus stewed meat,” one franchisee wrote.

Another said, “Many customers perceive unfrozen to be better for you. Perception is everything.”

Twenty-seven domestic franchisees with approximately 199 stores participated in the Nomura survey, representing a small fraction of McDonald’s 14,000 stores in the US. 

McDonald’s CEO Steve Easterbrook said last month that there isn’t currently a large enough supply of fresh beef to expand the test nationally but that the company could start expanding it gradually region by region.

 Easterbrook said a larger rollout wouldn’t require any major new equipment or expenses for franchisees.

The company just has a few small issues to work out through the test, such as finding the best system for storage and handling of the beef to avoid any cross-contamination of the fresh, uncooked meat with other food items.

“We are trying to figure out the best way to segregate equipment like spatulas and scrapers for the grill,” he said.

Are those leafy greens kept cold? Meh

Leafy green vegetables are highly susceptible to microbial contamination because they are minimally processed. Pathogenic bacteria of concern include Escherichia coliO157:H7, Salmonella spp., and Listeria monocytogenes. Leafy greens are a highly perishable commodity, and in some cases have a postharvest shelf-life limited to one week.

lettuceThis study provides an approach to optimize storage temperature of leafy greens in the supply chain, considering the cost of refrigeration, sensory quality parameters (i.e., fresh appearance, wilting, browning, and off-odor), and microbial safety using nonlinear programming (NLP).

The loss of sensory quality parameters was expressed as Arrhenius equations and pathogen growth were represented by three-phase linear (primary) and square-root (secondary) models. The objective function was refrigeration cost, which was to be minimized. The constraints were growth of pathogens and the loss of sensory characteristics. An interactive graphical user interface was developed in MATLAB.

Pathogen growth is of more concern than loss of sensory quality in fresh-cut Iceberg lettuce when considering a shelf-life of up to two days, and the model indicates is difficult to maintain sensory qualities for longer shelf-life values. Browning is of maximum concern for fresh-cut Iceberg and Romaine lettuce, whereas off-odor is the biggest concern for fresh-cut chicory.

Cost, quality, and safety: A nonlinear programming approach to optimize the temperature during supply chain of leafy greens

LWT – Food Science and Technology, Volume 73, November 2016, Pages 412–418

Abhinav Mishra, Robert L. Buchanan, Donald W. Schaffner, Abani K. Pradhan

http://www.sciencedirect.com/science/article/pii/S002364381630370X

Are U-Hauls refrigerated? Labs test food prior to US political conventions

Katie Demeria of the Richmond Times-Dispatch writes that a state lab is working to ensure that the food served at the 2016 Democratic National Convention in Philadelphia is contamination-free.

u-haulVirginia’s Division of Consolidated Laboratory Services is currently testing samples of the food — including massive blocks of hamburgers to a case of pork tenderloins — that will be served at the convention, which takes place July 25-28.

Samples of the food came from the vendors selected to supply the convention.

“We’re looking for microbial agents or bacteria that should not be there, such as anthrax,” said Christopher Waggener, lead scientist for microbiology. “We’re also screening for another biothreat agent called ricin and another agent that causes botulism.”

Scientists also are looking for environmental contaminants, such as E. coli or salmonella, as well as radioactive elements that should not be in the food.

The lab will wrap up its tests and report the results today.

Last Friday, 400 pounds of meat arrived at the consolidated laboratory’s building in the Virginia Biotechnology Research Park in downtown Richmond.

“We met USDA inspectors at the door, and they brought a U-Haul down with cases and cases of meat,” Waggener said.

2 dead, 151 sick: UK says stop using imported rocket (lettuce), but not blaming anyone

Continuing in the fairytale theme that purveyors of food have the best interest of consumers at heart, as do taxpayer funded regulators, Public Health England have told a small number of wholesalers to stop using imported rocket leaves in their salad mixes, as investigations into a major E. coli outbreak continue.

lettuce.skull.e.coli.O145The outbreak had so far claimed two lives, PHE said today, with a total of 151 cases identified, 62 of which required hospital care.

Director of Public Health England, Dr Isabel Oliver, said  “PHE is using various approaches including whole genome sequencing (WGS) technologies to test samples from those affected. WGS technologies are at the forefront of improving the diagnosis of infectious diseases and this testing has indicated that the strain involved is likely to be an imported strain, possibly from the Mediterranean area.

“PHE is also working closely with the Food Standards Agency to trace, sample and test salad products grown in the UK and other parts of Europe.

“All food sample results to date have been negative for E.coli O157, but it’s important to be aware that where food has been contaminated with E.coli O157, it is not always possible to identify the bacteria on food testing.

“As an additional precautionary measure, we have advised a small number of wholesalers to cease adding some imported rocket leaves to their mixed salad products pending further investigations

The UK Food Standards Agency said in the most bureaucratic way possible – with 2 dead and 151 sick – it is continuing to work closely with PHE and local authorities to investigate an outbreak of E.coli O157. The outbreak has been linked to eating mixed salad leaves, including rocket leaves, however a specific food source has not been confirmed at this stage.

As a precaution, the FSA is reminding people of the importance of good hand and food hygiene practices. All vegetables, including salads, intended to be eaten raw should be thoroughly washed unless they are specifically labelled ‘ready to eat’. Investigations are ongoing.

Fail. Nothing about on-farm food safety.

 

Do food producers have any idea what goes in their products? Traceability, another fairytale

For all the food companies that brag about traceability, why does it take so long to figure out that your suppliers are in a recall and maybe you should be too?

HT_betty_crocker_recall_as_160712_12x5_1600The lingering, lasting recalls involving products that contain E. coli O121- tainted wheat from General Mills, Listeria-tainted frozen produce from CRF Frozen Foods in Pasco, Wash, and Listeria-tainted sunflower kernels from SunOpta, pile up daily.

Yesterday, the girlfriend of my much younger youth, Betty Crocker, recalled cake mix in Canada because it possibly contained E. coli flour from General Mills.

But how could I not lick her spoon, or sample her beater, as a child or an adult?

Randy Shore of the Vancouver Sun asked me those questions the other night during a conversation about risk, cookie dough and preaching.

I said I don’t preach, I provide information, people can do what they like, but it really sucks if your kid gets a Shiga-toxin producing E. coli like O121 because it’s a serious illness, often with lifelong consequences.

And it’s a scam that for all the prowess and profits of these companies, from Betty, to Golden Dipt brand Jalapeño Breader, to Planters Sunflower Kernels, they can’t figure out who is supplying their shit ingredients.

Markets/local/sustainable/whatever adjective are no better.

It’s food fraud.

Rick Holley, a professor emeritus of food safety at the University of Manitoba in Winnipeg (that’s in Canada) told CBC News that eating foods that aren’t well cooked is sorta like the risks people take when they jaywalk and don’t cross the street at a traffic light or stop sign.

“We know only too well that there are folks who like to eat food that’s not well cooked or isn’t cooked and against the best advice, because the food we eat is not sterile — there are risks associated with it. Having said that, I enjoy my salad in the summer time. Uncooked.

“Where we need also to do some work is on maintaining and improving the levels of sanitation in all parts of the food system, food processing plants. We know from investigations that have been done both in Canada and the United States that when there are lapses in sanitation, problems occur in food processing plants. We can see it now happening in mills.”

UCM511108According to Shore at the Vancouver Sun, the U.S. Food and Drug Administration has warned people not to eat raw cookie dough, effectively killing the fun of making cookies.

1.) How serious is the cookie dough threat?

In 2009, at least 71 people in 31 states were sickened by Nestle Tollhouse cookie dough contaminated with E. coli O157: H7. While nobody died, 11 people suffered serious complications. Nestle now uses heat-treated flour.

2.) What about homemade cookie dough?

The flour you use at home to make cookies has likely not been treated to kill salmonella and E.coli, so it should not be eaten raw. Irradiation is used to control insects in flour, not bacteria, so don’t depend on it for food safety.

3.) What about cookie dough ice cream?

Cookie dough ice cream is a guilty pleasure, but you can eat it without risk. Ben & Jerry’s cookie dough is made with pasteurized eggs and heat-treated flour. Most manufacturers, including Dreyer’s and Haagen-Dazs, use similar methods. 

4.) What will happen to me?

According to the Canadian Food Inspection Agency, rainbow bits contaminated with E. coli O121 may not look or smell spoiled but can still make you sick. Symptoms can include nausea, vomiting, mild to severe abdominal cramps and watery to bloody diarrhea. In severe cases of illness, people may die.

5.) Should I panic?

While the CFIA is so far silent on the issue, the FDA warns that you should not eat or allow your children to play with raw flour products, including homemade PlayDoh. If you make cake, cookies or pancakes, don’t lick the beaters.

Julia Calderone of Consumer Reports lists her own five ways you could get an E. coli infection from flour.

They’re not that surprising to microbiology-types.

Be the bug. Follow the bug (especially animal poop).

Since December 2015, 42 people across 21 states have developed an E. coli infection after eating uncooked flour. The outbreak is caused by a potentially dangerous strain of E. coli called O121.

Like E. coli O157, which has been responsible for food poisoning outbreaks from undercooked ground beef, O121 is a toxin-producing bacteria that may cause abdominal cramps, bloody diarrhea, and possibly life-threatening kidney damage. Fortunately, so far no one who has become ill from flour or flour-based products has developed kidney damage or died, but 11 people have been hospitalized. 

Products produced at a General Mills plant in Kansas City, Missouri, in November 2015 are the culprits behind these cases of E. coli infection. The company voluntarily recalled 10 million pounds of possibly contaminated flour, including their Gold Medal, Signature Kitchens, and Gold Medal Wondra flour brands. Several cake and pancake mixes that may have used General Mills flour have also been recalled.

The U.S. Food and Drug Administration and the Centers for Disease Control and Prevention are currently investigating these cases of E. coli infection, and are advising consumers not to eat flour and flour-containing foods that have not been cooked or baked. Consuming raw flour is a potential hazard, says the FDA, since it isn’t meant to be a ready-to-eat product.

Some of the ways you could ingest uncooked flour may not be so obvious. Here are five sources of potentially tainted flour that you should watch out for if you want to prevent a possible associated E. coli infection. 

  1. Raw doughs and batters.Of course, cookie doughs, pizza doughs, and cake and pancake batters are risky, so you should be careful not to accidentally or intentionally eat them before they’re cooked.

But raw dough can also make you sick even if you don’t intend to eat it. For example, kneading bread dough often leaves you with floury hands. Some restaurants give children balls of uncooked dough to play with, and they could stick either the tainted ball or their contaminated fingers into their mouth. Even storing uncooked dough next to other foods could cause a problem, so be sure to handle and stash it carefully.

  1. Arts and crafts materials.Websites devoted to pantry-based projects offer recipes for modeling clays, play doughs, spray glue, paper mache, and ornaments with flour as the main ingredient. For now, avoid making these mixtures with kids, and be sure to wash your hands and work surfaces thoroughly afterward if you decide to work with them.
  2. No-cook dishes.Some flour-containing recipes for truffles, icing, and even cookies don’t involve heating or baking. So if the recipe doesn’t call for the dish to be thoroughly cooked, skip it.
  3. Contaminated cooking and eating surfaces.Flour is light and powdery, and can easily fly everywhere in your kitchen if you aren’t careful. Even miniscule amounts of tainted flour can make you sick, so be sure that foods that will be eaten raw don’t come into contact with flour-dusted counters, cutting boards, plates, and the like. Wash these—as well as your hands—in hot soapy water after using them. Be careful if you’re dredging meat or chickenin flour before cooking, so the flour doesn’t go all over the place.
  4. Containers you use to store flour.When you purchase a new bag of flour, you might dump the new flourinto a flour bin or canister that has some old, recalled flour already in it, unwittingly contaminating your new stash. If you’re not sure if the flour you currently have has been recalled, throw it out. Make sure that you thoroughly clean your storage container before using it again.

Clever: Inexpensive camera system detects foodborne Shiga toxins

Reuven Rasooly, a chemist at the United States Department of Agriculture’s Agricultural Research Service Western Regional Research Center in Albany, California (nice tagline) has developed a simple and inexpensive system for detecting Shiga toxin, a product of pathogenic Escherichia coli O157:H7.

shiga.toxin.cameraThis particular pathogen causes about 73,000 cases of food poisoning and more than 60 deaths in the United States each year.

The new system uses a camera and a light-emitting source to detect active toxins. Tests used today cannot distinguish between the active and inactive form of Shiga toxin, Rasooly says. It’s important to tell the difference between the two, because the toxin’s active form poses a threat to humans while the inactive form does not.

“We need devices that are affordable and sensitive to reduce the sources and incidence of foodborne illness,” Rasooly says. “Equipment such as a commercial fluorometer, typically used to detect Shiga toxin and other pathogens, is too expensive for developing countries, where the risk of foodborne illness and outbreaks is greatest.”

In a study, Rasooly and his colleagues showed that the camera system was as effective in measuring Shiga toxin activity as a fluorometer. Both instruments had the same toxin detection levels. The difference is that a fluorometer costs about $35,000 while the camera only costs $300, making it an affordable alternative for diagnostic labs.

In addition, the new system can easily be adapted for detecting other foodborne toxins. Rasooly recently demonstrated that the camera system can be used to detect Aflatoxin B1, a toxin produced byAspergillus flavus and Aspergillus parasiticus.

“The toxin contaminates crops and foodstuffs worldwide, affecting 4.5 billion people,” Rasooly says.

 

From Promed: E. coli O157 in Africa, 1992

The Epicore Global Surveillance Project reports that in 1992, a large outbreak of bloody diarrhea caused by Escherichia coli O157 infections occurred in southern Africa.

Swaziland-Bucket-BrigadeIn Swaziland, 40,912 physician visits for diarrhea in persons aged 5 years and older were reported during October through November 1992. This was a 7-fold increase over the same period during 1990-91. The attack rate was 42 percent among 778 residents we surveyed. Female gender and consuming beef and untreated water were significant risks for illness.

E. coli O157:NM was recovered from 7 affected foci in Swaziland and South Africa; 27 of 31 patients and environmental isolates had indistinguishable pulsed-field gel electrophoresis patterns. Compared with previous years, a 5-fold increase in cattle deaths occurred in October 1992. The 1st heavy rains fell that same month (36 mm), following 3 months of drought. Droughts, carriage of E. coli O157 by cattle, and heavy rains with contamination of surface water appear to be important factors contributing to this outbreak.

Early in November 1992, physicians arriving for duty at a small hospital on a sugar plantation in Swaziland found over 100 persons sprawled on the ground in front of the casualty department. Many had bloody diarrhea, and almost all were suffering severe abdominal pains. The next day, the number of patients with the dysenteric illness nearly doubled, yet stool specimens sent to local laboratories did not yield common parasitic or bacterial pathogens, including Shigella spp. With the etiologic agent still unknown into the 2nd week of the outbreak, specimens were forwarded to a reference laboratory in South Africa, where a surprising discovery was made: E. coli O157 had emerged in Africa.

An outbreak of E. coli O157 infections was heretofore unheard of in Africa or, for that matter, anywhere in the developing world. E. coli O157 had been isolated only once before in southern Africa, from an elderly man undergoing surgery for lower gastrointestinal bleeding in Johannesburg in 1990. Carriage of E. coli O157 by cattle, cattle deaths secondary to drought, and heavy rains that resulted in contamination of surface water were important factors contributing to the emergence of E. coli O157 in Africa. Given that drought and heavy rains will likely recur in Africa, the possibility that E. coli O157 will once again emerge to cause a major regional outbreak cannot be excluded. Clinicians need to be aware of this so that delayed diagnosis and inappropriate treatment resulting in loss of lives can be avoided.

Oklahoma student saved by blood donors twice

Eric Swanson of The ADA News reports that without the help of blood donors, Tierney Roberts might not be alive today.

donate-blood-2.jpg~c200Donated blood helped Roberts for the first time in 2010, when she was injured in a two-vehicle wreck on state Highway 19. She suffered serious but not life-threatening head and facial injuries and was airlifted to OU Medical Center in Oklahoma City for treatment.

In December 2014, Roberts, an East Central University student, developed an E. coli infection that turned into hemolytic uremic syndrome. Blood donations helped her recover from the disease.

Those two experiences reminded Roberts that blood donors can save lives, she said Wednesday.

“For those people who are scared of needles, it is really not that bad,” she said. “When you think about it, it doesn’t hurt hardly at all. It’s a small needle, and it takes, seriously, like 10 minutes. It’s definitely worth it.”

Three Ada-based employers — the Chickasaw Nation, Mercy Hospital Ada and People’s Electric Cooperative — are teaming up with the Oklahoma Blood Institute for a blood drive in Ada.

The seventh annual Ada All-American Blood Drive will take place from 9 a.m. until 6 p.m. today at the Pontotoc County Agri-Plex Convention Center, 1710 N. Broadway. Healthy people ages 16 and older who meet certain requirements are encouraged to participate.

For more information or to make an appointment, call 1-877-340-8777 or visit www.obi.org.

UK girl, 10, ‘could need kidney transplant’ after Egypt holiday

BBC reports that a 10-year-old girl could have to undergo a kidney transplant after contracting E. coli on a holiday in Egypt, her family has said.

emily.bridges.ukEmily Bridges from Queenborough, Kent, picked up the bug while on a trip to the Red Sea resort of Hurghada in May.

She spent a week on life support and is now dependent on immune suppressant drugs and 12 hours of dialysis a day.

Tour operator Thomson said the family had not contacted them but it closely monitored hygiene at its resorts.

Emily’s symptoms were initially diagnosed in Egypt as an upset stomach, but 24 hours after landing in the UK her organs began to shut down.

Her mother, Rachel, said: “Her kidneys stopped working. Her heart stopped working. They said it was like having a heart attack for five days.”

She said they were hoping Emily’s kidneys would recover from the damage but the “worst case scenario” was dialysis at home and “a transplant further down the line”.

The family said they were seeking legal advice about making a complaint.

In a statement, Thomson said it was sorry to hear of Miss Bridge’s situation, adding: “Nothing was reported to our team in resort or since the family has returned home.

“We’re not in a position to comment further, until the family have contacted us and we have had the opportunity to carry out an investigation.”

Microbiology of cattle poop

Cattle are a natural reservoir of Shiga toxin–producing Escherichia coli (STEC) and have recently been recognized as a major source of Campylobacter jejuni contamination. While several factors are known to be associated with bacterial colonization, the underlying microbial factors have not been clarified.

dodd.poopIn this study, we characterized the fecal microbiota of dairy cattle (n = 24) using next-generation sequencing to elucidate the intestinal bacterial communities and the microbial diversity in relation to the presence of the foodborne pathogens STEC and C. jejuni (STEC-positive samples, n = 9; STEC-negative samples, n = 15; C. jejuni-positive samples, n = 9; and C. jejuni-negative samples, n = 15). While no significant differences were observed in alpha diversity between STEC-positive and STEC-negative samples, a high diversity index was observed in C. jejuni-positive samples compared to C. jejuni-negative samples. Nine phyla, 13 classes, 18 orders, 47 families, 148 genera, and 261 species were found to be the core microbiota in dairy cattle, covering 80.0–100.0% of the fecal microbial community. Diverse microbial communities were observed between cattle shedding foodborne pathogens and nonshedding cattle. C. jejuni-positive cattle had a higher relative abundance of Bacteroidetes (p = 0.035) and a lower relative abundance of Firmicutes (p = 0.035) compared to C. jejuni-negative cattle. In addition, while the relative abundance of 2 and 6 genera was significantly higher in cattle-shedding STEC and C. jejuni, respectively, the relative abundance of 3 genera was lower in both STEC- and C. jejuni-negative cattle.

Our findings provide fundamental information on the bacterial ecology in cattle feces and might be useful in developing strategies to reduce STEC or C. jejuni shedding in dairy cattle, thereby reducing the incidence of STEC infection and campylobacteriosis in humans.

The fecal microbial communities of dairy cattle shedding Shiga toxin–producing Escherichia coli or Campylobacter jejuni

Foodborne Pathogens and Disease. July 2016, ahead of print. doi:10.1089/fpd.2016.2121.

Dong Hee-Jin, Kim Woohyun, An Jae-Uk, Kim Junhyung, and Cho Seongbeom

http://online.liebertpub.com/doi/abs/10.1089/fpd.2016.2121