barfblog

  • Posted: February 5th, 2012 - 7:21pm by Doug Powell

     On Dec. 8, 2011, a biz in Las Vegas had a catered lunch.

    Less than a day later, a bunch of them were barfing.

    The Southern Nevada Health District (SNHD) began an investigation the next day after receiving numerous reports of barfing among attendees; excerpts from their report are below.

    Approximately 150 people work at Business A. Of the 63 employees who replied to the electronic survey, 50 reported they consumed food and/or drinks at the luncheon. Of the 50 luncheon attendees, 21 (42%) people met the case definition. An additional 29 people who ate at the luncheon but did not become ill served as non-case study participants. No ill person sought medical attention from a healthcare provider.

    The caterer had a health card that is issued by the SNHD to food handlers. However, the caterer did not hold a catering permit issued by the SNHD, so health types don't know if the same caterer sickened others at others meals because SNDH only tracks complaints against licensed businesses.

    Both the caterer and a representative from Business A reported that the caterer
    arrived at 9:00 am on December 8, and lunch service started at approximately 1230 hrs
    (meal start time among ill persons ranged from 1130 to 1900 hrs) (Fig. 1). The duration
    of the luncheon was unknown.

    The caterer reported that all foods served were pre-cooked and ready-to-eat. The ham and turkey breasts were transported to Business A in a cooler with ice. Both meats were further sliced onsite, placed in bowls and re-heated in 5-6 batches per meat in two small non-commercial microwave ovens that were provided by Business A at the catering site. The caterer reported that food batches were stirred during heating. The caterer alleged the temperature of the meat was 170°F (76.7°C) after heating, but it was unclear where the temperature was taken in the meat. Heated ham slices were pooled in one chafing pan and canned pineapple with its juice was added.

    Heated turkey meat was pooled in another pan and heated canned gravy was added. The
    chafing dishes containing the ham and turkey were warmed by pans of hot water that was heated with Sterno heaters. Both meats were stored in their respective chafing dishes for about 0.5 hr prior to eating, but the duration of time foods were stored in the chafing dishes was not known.

    Upon collecting foods for testing, EH staff observed that leftover foods were stored in a refrigerator that displayed the temperatures of <40°F, with the bulk of the food stored in covered consumer-grade plastic containers. All remaining food in their original containers was collected for testing and included: Mashed potatoes, ham and pineapple topping, green beans, salad with fruits, and two mixed-food plates containing 1) Ham, turkey, mashed potatoes, stuffing, green beans, and 2) Stuffing, mashed potatoes, green beans.

    I’m getting hungry.

    The EH staff sent a formal notice to the caterer requiring all food operations to immediately cease and desist. They also required that the website which advertises the catering business be modified to announce that a permitted food facility will be providing the food to future events that are planned by the catering company. Additionally, EH also issued a bill to the caterer charging for the time that EH staff had spent in investigating the outbreak.

    The isolation of C. perfringens was strongly suggestive that ham was the vehicle of transmission, and an error likely occurred during its re-heating and hot holding during the luncheon service. The heat generated by a small microwave oven might be insufficient to bring all portions of the ham to above 165°F (74°C) to destroy the C. perfringens bacteria. When the heating process is not evenly accomplished, the surviving C. perfringens bacteria can multiply and undergo sporulation. During the holding period where food is kept warm in covered chafing pans for extended periods of time, the spores can germinate to produce vegetative cells and multiply rapidly to large numbers. Ingestion of the bacteria during the luncheon may have resulted in further multiplication and sporulation in the intestine. The release of enterotoxin when C. perfringens sporulates can cause acute diarrhea. To prevent the proliferation of pathogens in potential hazardous food, the US FDA Food Code 2009 recommends that food that are reheated in a microwave for hot holding shall be reheated so that all parts of the food reach a temperature of at least 74oC (165oF) and the food is rotated or stirred, covered, and allowed to stand covered for 2 minutes after reheating (Section
    3-403.11.B). Also, hot holding of such foods should occur at 57oC (135oF) or above
    (Section 3-501.16.A1).

    The majority of C. perfringens outbreaks are often the results of improperly cooled food or food held at room temperature for extended periods. Coupled with concurring epidemiological findings that the contamination and proliferation of the bacteria may have occurred at the luncheon, no further food traceback or recall action of the ham was implemented by the FDA.

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  • Posted: February 5th, 2012 - 6:29pm by Doug Powell

    Fresh tomato supply chain leaders are – in 2012? -- sharpening food safety programs and auditing protocols with a goal of cutting foodborne illnesses linked to their product.

    So says The Packer, but shouldn’t that have been done about 15 years ago as evidence accumulated that tomatoes were a frequent culprit in outbreaks of foodborne illness?

    As Florida, California and other tomato types met in early Feb., audit fatigue, or numerous audits grower-shippers’ customers often require, remained central in discussions.

    “How many standards can you audit to?” asked Billy Heller, chief executive officer of Pacific Tomato Growers Ltd., Palmetto. “Audit fatigue within our group at all levels is unbelievable. We have customers coming behind other customers checking the other audits because they each have their own specs.

    Ed Beckman, president of the Certified Greenhouse Vegetable Producers Association of North America, Fresno, Calif., said the debate should be about how tomato food safety metrics reflect science. Beckman, until recently president of Fresno, Calif.-based California Tomato Growers, said the industry seeks collaboration with the FDA and the U.S, Department of Agriculture throughout the audit process.

    “This is not growers and customers sitting in a room and defining what our future is,” Beckman said. “We don’t simply pull a number out of the air and throw it in that document and say it’s good.

    “... This about bringing people together, sharing ideas, sharing our frustrations with existing audits, auditing and trying to come back with a solution that meets everyone’s needs in a single audit that is based on science.”

    During the meetings, growers and buyers discussed customer expectations, additions to the standards and issues such as commingling at repacking operations.

    A table of older, fresh tomato-related outbreaks is available at http://www.foodsafety.ksu.edu/en/article-details.php?a=3&c=32&sc=419&id=953.

     

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  • Posted: February 5th, 2012 - 6:04pm by Doug Powell

    Do fish tire of eating seafood?

    Do fish like seafood as long as it doesn’t taste too much like fish?

    Do fish care if seafood is served at Sea World?

    People for the Ethical Treatment of Animals Australia thinks so, and wrote to Sea World manager Jeff Hughes asking for all fish dishes to be removed from the Main Beach marine park's menu, claiming it is akin to "serving poodle burgers at a dog show."

    PETA Asia Pacific campaign co-ordinator Claire Fryer said the educational marine park was hypocritical for selling flake, calamari and shrimp at the Dockside Tavern and cod burgers at the Top Terrace Food Court.

    Ms Fryer said the way in which fish were caught for fish farms and confined to "cramped, filthy tanks before being violently killed," was inhumane.

    Sea World refused to comment and has not replied to PETA.

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  • Posted: February 3rd, 2012 - 2:55pm by Doug Powell

     

    In a 1993 episode of the television series, Seinfeld, George Costanza was confronted at a funeral reception by Timmy, his girlfriend’s brother, after dipping the same chip into the dip after taking a bite.

    “Did, did you just double dip that chip?” Timmy asks incredulously, later objecting, “That’s like putting your whole mouth right in the dip!” Finally George retorts, “You dip the way you want to dip, I’ll dip the way I want to dip,” and aims another used chip at the bowl. Timmy tries to take it away, and the scene ends as they wrestle for it.

    In 2008, food microbiologist Paul L. Dawson at Clemson University oversaw an experiment in which undergraduates found on average, that three-to-six double dips transferred about 10,000 bacteria from the eater’s mouth to the remaining dip.

    Each cracker picked up between one and two grams of dip. That means that sporadic double dipping in a cup of dip would transfer at least 50 to 100 bacteria from one mouth to another with every bite.

    In anticipation of much dipping during Sunday’s Super Bowl, the Is It True video series af the Wall Street Journal’s Health Blog presents this animation, and concludes it’s not like putting your whole mouth in the dip but could be compared to sharing a kiss with your fellow dippers.

     

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  • Posted: February 3rd, 2012 - 9:03am by Ben Chapman

    Author: 
    Ben Chapman

    Translated by Albert Amgar
     

    Le département de la santé de Caroline du Nord a signalé une éclosion à norovirus ces dernières semaines, permettant aux responsables de la santé de l’État d’émettre une alerte.

    Plus de 125 clients d’un restaurant de Conover, Caroline du Nord, sont tombés malades à cause de norovirus mi-janvier ; la plupart des personnes ont été malades après avoir mangé au restaurant Harbor Inn Seafood, les 13 et 14 janvier, mais quelques clients sont devenus malades très récemment après avoir y mangé le 20 janvier.

    Bien que l’origine de l’aliment n’ait pas été identifiée, des victimes disent que les personnes présentes à la party qui sont tombées malades après avoir mangé chez Harbor Inn Seafood, sont celles qui ont mangé de la salade composée.

    Les salades peuvent être préparées par une personne qui ne se voit pas comme étant un manipulateur d’aliments. Norovirus,

    spécifiquement durant les mois d’hiver, est stable dans l’environnement et peut survivre et infecter pendant des semaines après une contamination.

    Des infections à norovirus peuvent avoir lieu sans symptômes.

    Les personnes infectées par norovirus peuvent libérer d’importantes quantités de particules virales lors de vomissements et de diarrhées.

    L’excrétion virale (présence du virus dans les selles) peut parfois durer pendant 3 semaines après que les symptômes soient terminés.

    Norovirus peut persister sur des surfaces de cuisine pendant plus de six semaines.
    La plupart des désinfectants pour les mains ne sont pas efficaces pour réduire norovirus.

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  • Posted: February 3rd, 2012 - 6:33am by Doug Powell

    Cleaning up vomit promptly is crucial to containing the spread of bugs like norovirus as 300 staff and students at a Jesuit high school in San Francisco discovered Wednesday.

    The outbreak at Saint Ignatius College Preparatory school, initially believed to have been caused by a virus, sent a handful of the sickened students to hospital emergency rooms for treatment of dehydration, principal Patrick Ruff said.

    School spokesman Paul Totah said roughly 300 pupils in all, out of the school's 1,360-member student body, were believed to have been affected in some way.

    Extra maintenance staff were brought in to scour the entire school with a bleach-based solution, and the process will be repeated on Thursday, Ruff said.

    The school consulted with San Francisco health inspectors, who visited the school Wednesday and ruled out cafeteria food or waterborne sources for the outbreak, he said. Further testing is needed to determine whether norovirus, a common cause of gastroenteritis, was the culprit.

    Dr. Tomas Aragon, San Francisco's chief medical officer, said the outbreak may have originated from a single infected student who got sick in an often-used doorway.

    "A student vomited on central doors, on the rods that open these big doors. Then the bell rang and a lot of students went through that door."

    Aragon said the norovirus can survive on surfaces for days and is highly contagious.

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  • Posted: February 3rd, 2012 - 6:10am by Doug Powell

    Police raided a Rockbank, Australia property this week with representatives from the RSPCA, Melton Shire Council, the Department of Sustainability and Environment (DSE) and the regulator responsible for meat safety, PrimeSafe.

    "The other agencies attended the residential address in relation to information about possible wildlife and animal cruelty offences, as well as the alleged production and selling of meat," a police spokeswoman said.

    An RSPCA spokesman said 22 dogs of varying breeds were found and about 100 goats, one of which had to be euthanased on humane grounds.

    PrimeSafe chief executive Brian Casey said two goat carcasses were found and about 20 kilograms of sheep or goat meat was discovered in a freezer.

    There was no evidence dogs had been slaughtered, he said.

    In Victoria it is illegal to slaughter non-consumable animals such as dogs, horses, cats and donkeys.

    "You can slaughter consumable animals [such as goats] but they must be slaughtered at a licensed abattoir," Mr Casey told AAP.

    There was an exemption in place to enable farmers to slaughter edible animals on their properties for their own consumption, but the Rockbank property was not a farm, he said.

    More than 45 animals were seized by DSE including 30 frogs, four central bearded dragons, a children's python and a crucifix toad, which were being kept illegally.

    "A wildlife licence is required by anyone keeping and trading protected wildlife in Victoria."

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  • Posted: February 3rd, 2012 - 5:58am by Doug Powell

    Health Protection Scotland (HPS) said it had recorded 253 positive cases of E. coli during 2011, up from 212 the previous year.

    The agency blamed the increase on a UK-wide outbreak believed to have originated from contaminated vegetables. The outbreak, between December 2010 and July 2011, saw 250 cases of E. coli infection throughout England, Wales and Scotland and 74 victims treated in hospital.

    A subsequent investigation pointed to a possible link between leeks and potatoes bought loose and prepared in the home.

    However, the HPS report also noted that the apparent spike in E. coli between 2010 and 2011 was partly due to the unusually low rate of E. coli infection in 2010.

    The report also noted decreases in salmonella and campylobacter.
    In 2011, HPS received reports of 736 cases of salmonella infection – a decrease of almost 22% on the 941 reported in 2010.

    Cases of campylobacter were also down 3.6% to 6366 last year, although the figure remains "one of the highest on record."

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  • Posted: February 3rd, 2012 - 5:34am by Doug Powell

    A recall involving more than 150,000 pounds of eggs sold in pails for institutional use in 34 states, has caused at least two supermarket chains to issue their own recalls of prepared foods.

    Late Wednesday, Minnetonka, Minn.-based Michael Foods announced an egg recall covering 24 production lot dates, up from three announced last week. The recall involves Michael Foods’ 10- and 25-pound pails of eggs in brine — 15,000 pails all together – because of potentional contamination with listeria.

    There have been no confirmed reports of illness in connection with the recall by Michael Foods, the nation’s seventh-largest egg producer as ranked by the publication Egg Industry.

    The recalled eggs could be carrying Listeria monocytogenes, which can cause serious and sometimes fatal infections in young children, frail or elderly people and others with weakened immune systems. It can also cause miscarriages and stillbirths. Healthy individuals can suffer high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea.

    The same listeria strain struck Michael Foods three years ago and also prompted a recall. Listeria monocytogenes was found in bags of hash browns, a discovery that cost the company $2 million.

    The Michael recall was initiated after lab tests by a third party revealed that some eggs may have been contaminated. The recall was expanded after the company determined that a specific repair project in a packaging room was the likely source of the potential contamination. Michael Foods said it has corrected the problem.

    Doug Powell, a food safety expert at Kansas State University, told the Minneapolis Star-Tribune listeria is a relatively common bug, and is tested for “zero tolerance. So you get a lot of recalls without illnesses.”

    But when listeriosis strikes, it can be a particularly fatal foodbourne illnesses with a “kill rate” of 20 percent to 30 percent in the people who contract it, Powell said. Last year, a cantaloupe-related listeria outbreak centered on a Colorado farm killed 30 people, one of the deadliest food-related outbreaks in recent years.

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  • Posted: February 3rd, 2012 - 5:18am by Doug Powell

    Diners in Kanawha County, West Virginia will soon be able to check their mobile phones for restaurant inspections.

    Dr. Rahul Gupta, executive director of the Kanawha-Charleston Health Department, told The Charleston Gazette he is developing a mobile application featuring inspections for all restaurants in the county.

    He secured funding for the application three years ago, he said, when presenting the idea to the state Legislature. The idea can get off the ground with renewed interest in reforming the county's health inspections, he said.

    Gupta also presented the proposed changes to the county's health inspections, modeled after Albany County, N.Y.

    Beginning in July, Albany County will require restaurants to post a sign near the front of the entrance explaining the establishment's sanitary inspection results. The sign will indicate Excellent Compliance, Good Compliance or Fair Compliance with the county's health code. Restaurants that received unsatisfactory ratings will be shut down and re-inspected within days.

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