Blue Bell is shipping ice cream again after Listeria outbreak

Blue Bell Creameries began shipping ice cream from its facility in Sylacauga, Ala., on Tuesday, more than three months after an outbreak of listeria contamination nearly devastated the Southwestern ice cream favorite and forced the closing of all four of its plants.

blue.bell.jul.15But while this week’s move put frozen treats one step closer to consumers, the company said it did not yet know which stores would ultimately restock their shelves with Blue Bell flavors, or how soon.

“We’ve still got to meet with our retailers,” said Joe Robertson, Blue Bell’s advertising and public relations manager. “Retailers have been very supportive of us.”

Three people died and several others became ill after eating Blue Bell ice cream products contaminated with the listeria bacteria. A series of recalls and cleanups at the plants failed to eradicate the problem, and in April, the company voluntarily pulled all of its ice cream from store shelves.

Mr. Robertson said that the company had hired microbiologists to help review its safety procedures, and that every batch of ice cream would be tested before shipment. State officials in Alabama began collecting their own samples in late July, and cleared Blue Bell on Aug.

The Alabama plant is the only one of the company’s plants — two others are in Texas and one is in Oklahoma — that has been reopened and is producing the company’s products. Before the shutdown, the Alabama plant accounted for about 20 percent of Blue Bell’s items, Mr. Robertson said.

Blue Bell must notify the Texas Department of State Health Services two weeks before it resumes production, according to Chris Van Deusen, a spokesman for the agency.

 “In FDA testing, more than 99 percent of Blue Bell products had Listeria in it,” Mike Doyle, director of the Center for Food Safety at the University of Georgia, told Yahoo Health. “It was incredible. It wasn’t high levels, but it was there.”

Blue Bell has said its plants have gone through extensive cleaning and decontamination, but is it enough?

Doyle says it should be. Here’s why: Blue Bell likely had to strip down all of its plant equipment, take it all apart, and fully clean and sanitize everything. That includes getting rid of biofilms, a mucus-like substance that can surround bacteria like Listeria and protect it from sanitizers that would otherwise kill it.

Once that’s completed, the equipment will be tested and re-tested, and the ice cream will be frequently checked and swabbed to make sure it’s listeria-free.

“The FDA has jurisdiction over this, and they’re going to be monitoring the whole thing,” says Doyle. “The FDA is going to be all over these Blue Bell plants for a while.”

Doyle adds that it’s actually not uncommon for Listeria to get into processing facilities, since “some soil contains listeria and it can come in on plant workers’ shoes.” However, “the key is to control it,” he says.

Unfortunately, Doyle says there’s no way of visibly telling whether your ice cream is Listeria-free — you have to trust the manufacturer.

Or they could market food safety at retail and make microbial test results public.

Sprouts recalled again

As Virginia sprout grower (not) Good Seed Inc., of Springfield, Va., announced its third recall because of Listeria monocytogenes, the Australian Food Safety Information Council issued a sprout summary, noting that in addition to overseas outbreaks, 125 were sickened with Salmonella in Western Australia in 205 and 15 in Victoria in 2006.

sprout.salad.aust.aug.15“Washing sprouts has been found to be not very effective as laboratory studies have shown that bacteria can be internalised in the sprouts, making it difficult wash off/sanitise, and bacteria can be protected in a biofilm on the sprout surface. People in the 4 vulnerable demographics (young children, people 70+, immune-compromised or pregnant) should not eat uncooked sprouts of any kind.

This is a picture of a salad served at an Australian institution full of immunocompromised people.

Guess they didn’t get the memo.

Good Seed in Virginia isn’t saying anything, although all three recalls came weeks after the fresh sprouts were packed and shipped. The most recent recall notice, dated Aug. 3, is for all sprouts Good Seed produced on or after June 22.

The Packer reports no illnesses have been linked to the sprouts, which were distributed to retailers in Virginia, Maryland and New Jersey.

However, a spokeswoman for the Virginia Department of Agriculture said in May that the Centers for Disease Control and Prevention confirmed some listeria infections among people in the distribution area match the genome type of the listeria monocytogenes confirmed on the Good Seed sprouts.

57 sick including 24 dead in 2008 Maple Leaf Listeria outbreak: the scientific paper

Beginning in the summer of 2008, the deaths of two Toronto nursing home residents in were attributed to listeriosis infections. This eventually prompted an August 17, 2008 advisory by the Canadian Food Inspection Agency (CFIA) and Maple Leaf Foods, Inc. to avoid serving or consuming certain brands of deli meat as the products could be contaminated with Listeria monocytogenes.

ITALY-G8-G5-AGRICULTURE-FARMWhen genetic testing determined a match between contaminated meat products and listeriosis patients on Aug. 23, 2008, all products manufactured at Maple Leaf Foods plant 97B were recalled and the facility closed

Several weeks later, the company determined that organic material trapped deep inside the plant’s meat slicing equipment harbored Listeria, despite routine sanitization that met specifications of equipment manufacturers. In total, 57 cases of illness were detected, including 24 deaths, connected to the consumption of the plant’s contaminated deli meats.

Notable from the paper:

Plant inspections identified several areas of concern. A building construction project was initiated in April 2008. There was structural damage and poor maintenance in certain rooms containing RTE product and evidence of condensate dripping onto unpackaged finished product in a common refrigerated storage room. IMP documentation indicated that Listeria  spp. were detected at least 16 times between May 1 and August 16, 2008 in routine environmental swabs of food contact surfaces on lines A and B, 2 other production lines (lines C and D), and associated equipment. In response to each positive finding, the IMP staff sanitized production line surfaces and other areas where bacteria could grow. However, there was no analysis of trends over time to identify the underlying cause of the contamination. The cleaning and disinfection procedures at the IMP were inadequate. In addition, employee flow between rooms created opportunities for cross-contamination of finished product.

 Experts who investigated the source of product contamination at the IMP concluded that contaminated mechanical meat slicers were the most likely cause (Weatherill, 2009). As observed in previous outbreaks, meat slicers can provide a site for the growth of L. monocytogenes  and cross-contamination of finished products (Tompkin, 2002). Sanitation procedures used prior to the outbreak were ineffective at removing organic material harbored within the slicer.

listeria4As I have long maintained, the best food producers, processors, retailers and restaurants will go above and beyond minimal government and auditor standards and sell food safety solutions directly to the public. The best organizations will use their own people to demand ingredients from the best suppliers; use a mixture of encouragement and enforcement to foster a food safety culture; and use technology to be transparent — whether it’s live webcams in the facility or real-time test results on the website — to help restore the shattered trust with the buying public.

And the best cold-cut companies should stop dancing around and explicity tell pregnant women, old people and other immunocompromised folks, through labels or point-of-sale information, don’t eat this food unless it’s heated (watch the cross-contamination).

Abstract

A multi-province outbreak of listeriosis occurred in Canada from June to November 2008. Fifty-seven persons were infected with 1 of 3 similar outbreak strains defined by pulsed-field gel electrophoresis, and 24 (42%) individuals died. Forty-one (72%) of 57 individuals were residents of long-term care facilities or hospital inpatients during their exposure period. Descriptive epidemiology, product traceback, and detection of the outbreak strains of Listeria monocytogenes in food samples and the plant environment confirmed delicatessen meat manufactured by one establishment and purchased primarily by institutions was the source of the outbreak. The food safety investigation identified a plant environment conducive to the introduction and proliferation of L. monocytogenes and persistently contaminated with Listeria spp. This outbreak demonstrated the need for improved listeriosis surveillance, strict control of L. monocytogenes in establishments producing ready-to-eat foods, and advice to vulnerable populations and institutions serving these populations regarding which high-risk foods to avoid.

Multi-Province Listeriosis Outbreak Linked to Contaminated Deli Meat Consumed Primarily in Institutional Settings, Canada, 2008

Foodborne Pathogens and Disease, Volume: 12 Issue 8: August 10, 2015

Currie Andrea, Farber Jeffrey M., Nadon Céline, Sharma Davendra, Whitfield Yvonne, Gaulin Colette, Galanis Eleni, Bekal Sadjia, Flint James, Tschetter Lorelee, Pagotto Franco, Lee Brenda, Jamieson Fred, Badiani Tina, MacDonald Diane, the National Outbreak Investigation Team, Ellis Andrea, May-Hadford Jennifer, McCormick Rachel, Savelli Carmen, Middleton Dean, Allen Vanessa, Tremblay Francois-William, MacDougall Laura, Hoang Linda, Shyng Sion, Everett Doug, Chui Linda, Louie Marie, Bangura Helen, Levett Paul N., Wilkinson Krista, Wylie John, Reid Janet, Major Brian, Engel Dave, Douey Donna, Huszczynski George, Di Lecci Joe, Strazds Judy, Rousseau Josée, Ma Kenneth, Isaac Leah, and Sierpinska Urszula

http://online.liebertpub.com/doi/abs/10.1089/fpd.2015.1939#utm_source=ETOC&utm_medium=email&utm_campaign=fpd

HPP may be safe but this advert is bad

In 2005, Hormel Foodservice became the first meat processor to make a significant investment in High Pressure Pasteurization (HPP).

HPP is employed after the meat is sliced and packaged — so there is no opportunity for harmful pathogens and food spoilage organisms to re-enter the package, and no need for taste-altering preservatives.

Sounds good, although I wonder about the potential for contamination once the package is opened.

But check out this ad which is a good example of marketers messing up science.

Expectant mothers are advised not to eat cold cuts and other refrigerated ready-to-eat foods because of the potential for Listeria contamination.

In addition to the medieval stirrups and a stereotypical representation of birth, there is no mention of why this lunchmeat may be OK other than, it has no preservatives.

Bad Hormel, bad.

What goes in the fridge for safety reasons and other tales

Evidence and perception aren’t often congruent in the food safety world. There are lots of examples from the pages of the Internet: Dirty bathrooms are an indicator of sanitation in the kitchen; pathogens won’t transfer in less than five seconds when food hits the floor; and, yogurt is dangerous if consumed after the best-before date are just a few.

K. Aleisha Fetters of Yahoo News connected with Schaffner and I on the difference between refrigeration for safety and keeping stuff cool for spoilage and quality reasons.

Here are some excerpts.k2-_bd216f83-0923-407e-aea5-f57dc7338ebc.v1

Ketchup: Can remain at room temperature.
Ever wondered why restaurants keep ketchup on their tables rather than back in the fridge? Because it won’t make you sick, says Benjamin Chapman, PhD, associate professor and food safety extension specialist at North Carolina State University. Ketchup is so acidic that it prevents the growth of harmful bacteria. It will spoil faster if left out on the counter, but it could still take months to turn bad.

Fruits and vegetables: It depends.
If you think about it, fruits and vegetables grow outside at temps far higher than room temperature. That’s why, when they are whole, they are safe on your counter. However, when you cut them (or in the case of lettuce, just tear their stems from the ground), you actually rip open the cells of the plant. This releases nutrients, water, and bacteria, and allows them to mingle with each other, says food microbiologist Donald W. Schaffner, PhD, distinguished professor at Rutgers University. For example, when you cut a tomato or avocado, you need to keep it in the fridge to prevent the growth of salmonella. However, it’s worth noting that listeria can grow (albeit slowly) at cold temps. That’s why, even if you keep cut melons in the fridge, you should throw them out or add them to the compost pile after four days, Chapman says.

Mayonnaise: Must be refrigerated.
Well, this one is really more of an “it depends,” but we’re going to suggest sticking it in the fridge just in case. Most store-bought mayo is acidic enough to keep on the counter without it growing bad-for-you bacteria all by itself. (That’s why fast-food joints can keep it out in pumps until it’s used up.) But, if you cut some veggies with a knife, and then stick that knife in your jar of mayonnaise, you could potentially introduce bacteria into the mayo that is able to grow at room temperature, Chapman says. Meanwhile, whatever the recipe, homemade mayo is generally not acidic enough to fend off pathogens.

Listeria be out there: FDA reports on cantaloupe safety inspections

Coral Beach of The Packer reports that after inspecting 17 operations, federal officials say that fresh cantaloupe packinghouses are generally following good agriculture practices even though tests at nine of the companies showed listeria contamination.

cantaloupe.handThe inspections by the Food and Drug Administration were part of the agency’s follow-up efforts after a 2011 cantaloupe-related listeria monocytogenes outbreak that sickened more than 150 nationwide and killed more than 30.

“FDA’s 2013 cantaloupe packinghouse (investigation) was intended to further inform FDA of current cantaloupe packinghouse operating practices and conditions and provide data on the expected prevalence of listeria monocytogenes in and on cantaloupes and within packinghouses’ food and non-food contact surfaces during packing, handling and storage,” according to a July 27 report from consumer safety officer Michael Mahovic, who works with the agency’s division of produce safety.

For the review, FDA only inspected “firms that pack fresh cantaloupe in a packinghouse,” according to the report. “Processing facilities, growing fields, cantaloupe that are ‘field-packed’ and firms that do not handle cantaloupe were considered out of scope.”

Initially, FDA identified 50 firms in 18 states for review, but some of those companies were no longer in business and others turned out to be distributors, not packers. The remaining 17 firms that met the review criteria received notice 24 hours before inspectors arrived.

The agency collected environmental and product samples before and after packing and used a standardized questionnaire tailored for cantaloupe packinghouses to collect information and observations about each firm, according to the report.

All 17 firms had food safety plans and all reported they were aware of the 2011 listeria outbreak and that they “took some action to evaluate or bolster their own operations, from re-evaluating their own food safety plans, to completely refitting their buildings,” according to the report.

Eight firms did not have any positive listeria test results. One had pathogenic listeria present and the other eight tested positive for non-pathogenic listeria.

“Such findings do, however, suggest the potential for (pathogenic) listeria monocytogenes to be present,” according to the report.

Listeriosis in the Netherlands: Gastric acid inhibitors additional risk factor

Although the disease burden of listeriosis on population level is low, on individual level the impact is high, largely due to severe illness and a high case fatality. Identification of risk factors supports and specifies public health actions needed for prevention.

listeria.denmarksep.14We performed a case–control study to determine host- and food-related risk factors for non-perinatal listeriosis in the Netherlands. Patients with non-perinatal listeriosis reported between July 2008 and December 2013 were compared with controls from a periodic control survey who completed a questionnaire in the same period. Higher age, male sex, underlying disease, especially cancer and kidney disease, and use of immunosuppressive medicine were strong risk factors for acquiring non-perinatal listeriosis.

Analysis of the food consumption in the group of cases and controls with underlying diseases did not reveal any high-risk food products. Information and advice should continue to be given to persons at risk of severe listeriosis. Univariate analyses indicate that patients using gastric acid inhibitors are at risk. It is worth adding these patients to the group of susceptible persons.

Risk factors for sporadic listeriosis in the Netherlands, 2008 to 2013

Eurosurveillance, Volume 20, Issue 31, 06 August 2015

Friesema IH, Kuiling S, van der Ende A, Heck ME, Spanjaard L, van Pelt W.

http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=21199

Listeria uses alternative metabolic pathways to grow on cold salmon

Listeria monocytogenes grows on refrigerated smoked salmon by way of different metabolic pathways from those it uses when growing on laboratory media. This discovery could lead to reduced incidences of foodborne illness and death, said principal investigator Teresa Bergholz. The research appeared in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.

listeria4In the study, the investigators showed that L. monocytogenes grows on cold smoked salmon by using different metabolic pathways to obtain energy from those it uses on laboratory media, even when the media was modified to have the same salt content and pH as the salmon. To grow on the salmon, the bacterium upregulates genes that enable it to use two compounds from cell membranes — ethanolamine and propanediol — as energy sources.

L. monocytogenes, as well as Salmonella, are known to use those same genes to grow within a host — in the gastrointestinal tract, and on macrophages. “There may be ways we can use this information to control the pathogen both in foods as well as in infected people,” said Bergholz, assistant professor in the Department of Veterinary and Microbiological Sciences at North Dakota State University, Fargo. “Understanding how a foodborne pathogen adapts to environmental stresses it encounters on a specific food could allow food microbiologists to develop inhibitors of metabolic or stress response pathways that are necessary for the pathogen to grow or survive on that product.”

“The information may also enable improved risk assessments, as virulence of a pathogen may be affected considerably by the stress responses and/or metabolic pathways used to survive on the food,” said Bergholz.

Bergholz noted that ready to eat products typically have very low levels of contamination with L. monocytogenes, and that the bacterium must be able to grow on the product during refrigerated storage in order to reach an infectious dose. “In many cases, the addition of organic acids will slow or stop the growth of this pathogen on ready to eat meats and seafood.”

‘Saletei Hashef’ recalls 3 salads in Israel due to possible Listeria

“Salatei Hashef” salads company announced that laboratory tests revealed possible cases of Listeria monocytogenes in three of its products including tehina, corn salad and red cabbage. All of the recalled products are in 200 gram containers and have September 2015 expiration dates.

tomato-corn-couscous-saladCustomers are asked to return recalled products to the stores they were bought in, in exchange for new, safe packages.

3 dead, 7 sick: Blue Bell OKed to start ice cream production at Alabama plant

Blue Bell, the iconic Texas ice cream gone from store shelves since April, has no sales restrictions in Alabama now that tests after a major plant cleanup there show no signs of listeria.

blue.bell.jul.15Blue Bell Creameries, which began test runs at its Alabama plant last month, said: “We are producing ice cream. The ice cream we are producing is being added to our inventory. At this time, we do not have a date when our products will return to market.”

It was not immediately clear how much product the small Alabama plant can supply or where it will be distributed.

The company has not said when plants in Texas and Oklahoma will resume production.