Disease

  • Posted: March 5th, 2012 - 10:28am by Doug Powell

    Chicago_meat_inspection_swift_co_1906.jpg

     Why is meat inspected?

    Why does it have to be overseen by veterinarians?

    Does inspection result in fewer sick people?

    Do inspectors have pathogen-seeking goggles?

    The Washington Post reports this morning that every day, inspectors in white hats and coats take up positions at every one of the nation’s slaughterhouses, eyeballing the hanging carcasses of cows and chickens as they shuttle past on elevated rails, looking for bruises, tumors and signs of contamination.

    It’s essentially the way U.S. Department of Agriculture food safety inspectors have done their jobs for a century.

    But why? Today’s meat inspection seems grounded in repetition and historical precedent rather than science.

    In 1184, city leaders in Toulouse, France, introduced some of the first documented measures to oversee the sale of meat: profit for butchers was limited to eight per cent; the partnership between two butchers was forbidden; and, selling the meat of sick animals was forbidden unless the buyer was warned.

By 1394, the Toulouse charter on butchering contained 60 articles, 19 of which were devoted to health and safety.


    As outlined by Madeleine Ferrières, a professor of social history at the University of Avignon, in her 2002 book, Sacred Cow, Mad Cow: A History of Food Fears, the goal of regulations at butcher shops -- the forerunners of today's slaughterhouse -- was to safeguard consumers and increase tax revenues.

    Primarily increase tax revenues.

    Animals from the surrounding countryside were consolidated at a single spot -- the evolving slaughterhouse, originally inside city walls -- so taxes could be more easily gathered, and so animals could be physically examined for signs of disease.

It's no different today: slaughterhouses are common collection points to examine animals for signs of disease and to collect various levies.

    Bernard Vallat, Director General of the World Organisation for Animal Health (OIE), said a couple of years ago that veterinary legislation is the foundation of any efficient animal health policy.

    

”Veterinary legislation is a critical infrastructure element for all countries. In many OIE Member countries, the veterinary legislation has not been updated for many years and is obsolete or inadequate in structure and content for the challenges facing veterinary services in today's world. Dr Vallat said that it is important that the veterinary services have the authority to enter livestock premises and other establishments and take the actions needed for early detection, reporting and rapid and effective management of any animal diseases as soon as they are detected. Such actions include the capacity to seize animals and products, to impose standstills, quarantine, testing and other procedures; to control animals and products at frontiers; and to require the destruction and safe disposal of animals and all articles considered to present a risk of disease transmission and to public health. These activities represent the core activities of veterinary services in the field of animal health control and veterinary public health and the legislation must provide the necessary authority as a minimum.”

    That’s an attempt to answer the why-inspect-meat question, but it won’t be found in the Post story.

    The Post story does explain that in some large slaughterhouses, USDA inspectors must regularly shave slices off the surface of different pieces of meat and send them to labs to test for E. coli.

    But science has done little to thin the ranks of traditional inspectors. The law requires that they be present whenever animals are slaughtered and that they visit meat processing plants at least once a day. The USDA has more than 7,500 people doing the job.

    The USDA launched an initiative in 1997 that would have shifted some responsibility for identifying carcass defects on slaughter lines to food company employees so that inspectors could focus more on microbial contaminations, USDA officials said. But a year later, the American Federation of Government Employees, some federal inspectors and a public-interest group sued to block the plan, alleging that it scrapped the carcass-by-carcass inspections required by the 1906 law.

    As a result of the court battle, the USDA was forced to keep at least one inspector on each slaughter line.

    Richard Raymond, a former USDA undersecretary of food safety, tried another approach in 2005. He worked to reallocate the time inspectors spend in meat processing plants based on the facilities’ safety record and the risk posed by the foods processed: Ground-beef plants, for example, would get more attention than a canned-ham operation.

    But after two years of discussion with the food industry, consumer groups and unions, Congress barred the USDA from using funds to pursue the initiative. Raymond said he suspects that unions, fearful for their members’ jobs, blocked the effort.

    In Canada, the years following the 2008 listeria-in-Maple-Leaf-deli-meat outbreak that killed 23, the federal inspectors' union has had the public discussion volume set to shrill.

    Canadian union president Bob Kingston said in the past few days (months, years) that any cuts to Canadian Food Inspection Agency inspector staffing would “be devastating.”

    He doesn’t say why.

    Would more federal government inspectors have prevented the Maple Leaf mess? No. Do Canadian inspectors possess Superman-style listeria detection goggles? No. Do more inspectors make food safer? No.

    In January, the USDA unveiled a proposal that would keep one inspector on each poultry slaughter line while the rest focused on what the agency considers higher risks, such as testing poultry for pathogens. Much of the responsibility for spotting obvious problems with the carcasses would fall to the plant’s employees.

    The voluntary proposal would save taxpayers more than $90 million over three years, lower production costs for the industry by $257 million a year and better protect the public against contaminants, USDA officials say.

    But these days, the bulk of what Americans eat — seafood, vegetables, fruit, dairy products, shelled eggs and almost everything except meat and poultry — is regulated by the Food and Drug Administration. And the FDA inspects the plants it oversees on average about once a decade.

    These radically different approaches are a legacy from a time when animal products were thought to be inherently risky and other food products safe. But in the past few years, the high-profile and deadly outbreaks of foodborne illness linked to spinach, peanuts and cantaloupe have put the lie to that assumption.

    The FDA’s approach is partly by necessity: The agency lacks the money to marshal more inspectors.

    But it also reflects a different philosophy about how to address threats to the nation’s food supply: an approach based on where the risk is greatest.

    “We have two extremes in the inspection programs,” said Michael Doyle, a nationally known microbiologist who directs the Center for Food Safety at the University of Georgia. “Neither system is working very well. They both need to be updated and upgraded.”

    At the USDA, tight federal budgets and scientific advances over the past century make the case for new ways to manage risk, one that relies less on basic observation by an army of inspectors. But bureaucratic politics and union power have blunted these initiatives.

    “I’m sure the resources can be allocated better,” said Michael Batz, a University of Florida researcher who studied the risks posed by different foods. “But each agency has a mandate. USDA, because of its mandate, has very little discretion about how it can use its resources. FDA has a broader mission, but, I think it’s fair to say, not enough resources.”

    Regardless of whether local, state or federal, inspection are present to hold producers accountable, as part of a tax collection scheme, or to make food safer, the best slaughterhouses, processors, retailers and restaurants will go above and beyond the minimal standards of government.

    And stop whining about it.

    Because none of this chatter among the, err, chatting classes means fewer people are barfing from the food they consume.

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  • Posted: February 25th, 2012 - 5:04am by Doug Powell

     Most folks who wake up feeling crummy will sit down with a computer or smartphone before they sit down with a doctor.

    They might search the Web for remedies or tweet about their symptoms. And that's why scientists who track disease are turning to the Internet for early warning signs of epidemics.

    Philip Polgreen, an epidemiologist at the University of Iowa, told NPR’s Adam Cole, "Surveillance is one of the cornerstones of public health. It all depends on having not only accurate data, but timely data."

    The current system requires the Centers for Disease Control and Prevention to compile reports about from physicians and labs all over the country — and that can take a while. There's typically a week-long delay between an outbreak and the release of an official report.

    To get an early read on things, epidemiologists look for the first clues of illness — a rise in thermometer sales or increased chatter on hospital phone lines. Now, they're tapping into the Internet.

    A team of researchers at Johns Hopkins wanted to see if Google's estimates would prove accurate and useful in the everyday operation of a hospital.

    They compared Google searches originating in Baltimore to the number of patients who showed up with flu-like symptoms at a local emergency room.

    "It seems like a stretch, but what we found — amazingly — is that there's a really high correlation between these searches in the community and what we're seeing in hospitals," says Richard Rothman, the study's co-author.

    Online disease surveillance — or "Webidemiology" — is a cool new tool, and researchers are eagerly testing it out and double-checking the data they collect. But it won't be used by itself to make important public health decisions anytime soon.

    "The Internet is just one additional stream of information," Polgreen says. "It's certainly not going to replace traditional forms of surveillance."

    While the Internet may not be a perfect predictive tool, researchers and public health officials agree that it is great for one thing: communication.

    Social networking allows officials to easily reach the public and enter into a conversation. Tweets, searches and Facebook posts can give officials a sense of public reaction to vaccines, or their attitude towards an epidemic.

    "It's a quick and easy barometer for public anxiety," Polgreen says.
    And in a public health emergency, that can be just as useful as cold, hard numbers about cases.

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  • Posted: December 20th, 2011 - 10:26pm by Doug Powell

    Sandra Bullock wouldn’t stand a chance against the AQIS beagles.

    Australia has an impressive quarantine and inspection service for folks arriving to the island. So do lots of countries. The reason is that people want their nostaligic food, but have no concept of the consequences of disease introduction; think foot and mouth disease in the UK, which was ultimately linked to some overseas food eventually fed to pigs.

    People magazine, for those who can’t get enough of celebrities, artists and athletes who should focus on their craft instead of speaking, reports that Sandra Bullock's Christmas dinner involves illegally importing sausages from Germany to continue a meal tradition started by the actress's mother.

    "Since my mother passed, we break the law, because we have to manage to smuggle German sausages into the country, and apparently bringing meats across the waters is against the law," Bullock, 47, told Jay Leno during an appearance on The Tonight Show. "You fry 'em up with some sauerkraut and potato salad, but they have to be the right ones."

    Bullock said her family sends out an "SOS" to a handful of loved ones overseas to send the meats over to the U.S.

    "We just have to break the law a little bit, but eventually someone's package gets through," she told Leno.

    When pressed about the method, Bullock said with a smirk: "I'm not at liberty to divulge how we smuggle the sausage."

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  • Posted: October 31st, 2011 - 8:31pm by Doug Powell

    disgust.jpg

    Feelings of disgust help humans avoid, or at the very least recognize, the things that cause disgust like sick people, dirty water, vomit, body fluids and all the other stuff that makes us react "Yuck."

    BBC News reports that in a paper published in Philosophical Transactions for the Royal Society B, Dr Val Curtis, from the London School of Hygiene and Tropical Medicine, argues that avoidance behavior is essential to prevent the spread of all the major current and recent infectious diseases which present a threat to humans.

    Washing hands and food can prevent diseases like cholera and hepatitis A, avoiding sex with others who are infected helps prevent the spread of HIV, while keeping a distance from people with influenza or measles is a sensible move to reduce the risk of infection.

    "The idea of contacting or consuming infectious substances such as saliva, feces or vomit, or of intimate contact with those known to be carrying infection is deeply uncomfortable to even contemplate," writes Dr Curtis.

    "Self-limitation of such behaviour is so automatic and intuitive that it is often ignored as the front-line in our defense against disease.

    Something as simple as handwashing with soap could save over a million lives a year globally, the paper says, just by stopping the transmission of disease.

    Disgust is often used to get this message across in public health campaigns.

    Stephen Fry, who has declared himself celibate in the past, is quoted in Dr Curtis's paper describing how disgust played a part in his decision to abstain from sex.

    "I would be greatly in the debt of the man who could tell me what would ever be appealing about those damp, dark, foul-smelling and revoltingly tufted areas of the body that constitute the main dishes in the banquet of love.

    "Once under the influence of drugs supplied by one's own body, there is no limit to the indignities, indecencies and bestialities to which the most usually rational and graceful of us will sink."

    Why disgust matters
    12.dec.11
    Philosophical Transactions of the Royal Society B, vol. 366, no. 1583, 3478-3490
    Valerie Curtis
    http://rstb.royalsocietypublishing.org/content/366/1583/3478
    Abstract
    The new synthesis about disgust is that it is a system that evolved to motivate infectious disease avoidance. There are vital practical and intellectual reasons why we need to understand disgust better. Practically, disgust can be harnessed to combat the behavioural causes of infectious and chronic disease such as diarrhoeal disease, pandemic flu and smoking. Disgust is also a source of much human suffering; it plays an underappreciated role in anxieties and phobias such as obsessive compulsive disorder, social phobia and post-traumatic stress syndromes; it is a hidden cost of many occupations such as caring for the sick and dealing with wastes, and self-directed disgust afflicts the lives of many, such as the obese and fistula patients. Disgust is used and abused in society, being both a force for social cohesion and a cause of prejudice and stigmatization of out-groups. This paper argues that a better understanding of disgust, using the new synthesis, offers practical lessons that can enhance human flourishing. Disgust also provides a model system for the study of emotion, one of the most important issues facing the brain and behavioural sciences today.

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  • Posted: June 30th, 2011 - 5:41pm by Doug Powell

    As the temperature climbed to 105F today in Manhattan (Kansas) I was once again thankful for City Park, down the street, with it’s groovy new splash and water park.

    Two-and-a-half-year-old Sorenne hasn’t had an accident – yet – but who knows if she will.

    It’s a tough balancing act for city types – public health versus cool relief.

    WLWT repots that children who are not toilet trained can again swim in public pools in Northern Kentucky, under revised guidelines issued by the Northern Kentucky Health Department on Thursday.

    The restriction, in place since June 3, has been part of an effort to stop the spread of shigella. More than 100 cases of shigella have been reported in Boone, Campbell, Grant and Kenton Counties since April. Typically, about 25 cases are reported for the entire year.

    "When faced with a shigella outbreak, a big concern is that the bacteria, and other similar illnesses, could infect a larger population through local swimming pools," said Dr. Lynne M. Saddler, District Director of Health, in a news release.

    "The restriction on diapers in pools was an effective strategy. In past shigella outbreaks, when restrictions were not in place, we saw a significant increase of shigella cases and other recreational water illnesses in June. This June, with restrictions in place, we have not seen as many cases of shigella, or other illnesses, including cryptosporidium."

    Other efforts to contain the Shigella outbreak will continue, focusing on child care centers and swimming pool facilities, officials said.

    And keep those chlorine levels up.
     

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  • Posted: June 15th, 2011 - 11:52am by Doug Powell

    Who lets a chicken eat scones on a dining table?

    Zoonotic dumbass Tori Spelling.

    On the latest episode of Watch What Happens Live, a short clip from a new show that celebrity wannabe Tori Spelling is either part of, or makes an appearance has reinforced the fact that people in general have a poor understanding of the risks involved with animals in the transmission of zoonotic diseases.

    Baby chicks and chickens have been linked to many salmonellosis outbreaks throughout the world. The most recent outbreak in the U.S., still ongoing, has already sickened 39 people in 15 states. Tori, cook the chicken or get it off the table.
     

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  • Posted: May 6th, 2011 - 9:04am by Doug Powell

    Run a petting zoo? A state fair? Farm visits? Then this is the most comprehensive summary of everything to be done so people don’t barf.

    It’s a tad more than signs that say, “Wash your hands.”

    The National Association of State Public Health Veterinarians, Inc. (NASPHV) along with the U.S. Centers for Disease Control and a bunch of other public and animal health groups have updated guidelines for interacting with animals. The summary is below. The complete report is available at http://www.cdc.gov/mmwr/preview/mmwrhtml/rr6004a1.htm?s_cid=rr6004a1_e&source=govdelivery.

    Our table of petting zoo outbreaks is available at http://bites.ksu.edu/petting-zoos-outbreaks.

    Certain venues encourage or permit the public to be in contact with animals, resulting in millions of human-animal interactions each year. These settings include county or state fairs, petting zoos, animal swap meets, pet stores, feed stores, zoologic institutions, circuses, carnivals, educational farms, livestock-birthing exhibits, educational exhibits at schools and child-care facilities, and wildlife photo opportunities. Although human-animal contact has many benefits, human health problems are associated with these settings, including infectious diseases, exposure to rabies, and injuries. Infectious disease outbreaks have been caused by Escherichia coli O157:H7, Salmonella species, Cryptosporidium species, Coxiella burnetii, Mycobacterium tuberculosis, ringworm, and other pathogens. Such outbreaks have substantial medical, public health, legal, and economic effects.

    This report provides recommendations for public health officials, veterinarians, animal venue staff members, animal exhibitors, visitors to animal venues, physicians, and others concerned with minimizing risks associated with animals in public settings. The recommendation to wash hands is the most important for reducing the risk for disease transmission associated with animals in public settings. Other important recommendations are that venues prohibit food in animal areas and include transition areas between animal areas and nonanimal areas, visitors receive information about disease risk and prevention procedures, and animals be properly cared for and managed. These updated 2011 guidelines provide new information on the risks associated with amphibians and with animals in day camp settings, as well as the protective role of zoonotic disease education.
     

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  • Posted: March 15th, 2011 - 7:09am by Doug Powell

    It was a scene straight out of Amy’s favorite movie, Napolean Dynamite, times 30.

    The Daily Mirror reports a herd of runaway were massacred in a field after being put down by vets – in front of horrified children.

    The 30 cattle were rounded up by police and residents after being spotted wandering in local gardens in the early hours.

    After public health and animal welfare experts inspected them, council officials ordered them to be shot dead.

    Police say they were killed on “welfare grounds” – but the exact reasons remained unknown last night. However, some villagers were furious they were slaughtered in broad daylight – in full view of playing kids, who fled in tears.

    And staff at a hospital overlooking the field shut curtains to stop patients seeing the cull in Chirk, near Wrexham, North Wales. One resident said: “Some of my friends who live on the estate near the field where the cows were shot were quite upset afterwards. Some have young child­ren who were out playing at the time and they found it very distressing.”

    A police spokesman said: “All the animals had to be humanely slaughtered that evening. There were discussions between the council, Welsh Assembly and the animal welfare agency and it was decided the animals would have to be put down on welfare grounds. .”

    The animals’ carcasses were taken away in two lorries the next morning to be incinerated.
     

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  • Posted: March 14th, 2011 - 12:19pm by Doug Powell

    Researchers have shown how the O157:H7 strain of Escherichia coli causes infection and thrives by manipulating the host immune response. The bacterium secretes a protein called NleH1 that directs the host immune enzyme IKK-beta to alter specific immune responses. This process not only helps the bacterium evade elimination by the immune system, it also works to prolong the survival of the infected host, enabling the bacterium to persist and ultimately spread to unaffected individuals. This finely balanced mechanism, observed in both laboratory and animal models, could be relevant to other pathogens involved in foodborne diseases.

    While most E. coli strains help check the growth of harmful bacteria in the guts of animals and humans, a few E. coli strains, such as O157:H7, can cause severe diarrhea, abdominal cramps and, in rare cases, death. Human cases of E. coli O157:H7 have been linked to consumption of raw, undercooked, or spoiled meat.

    Scientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, plan to use the new information to further study how the host immune system mounts a response to E. coli O157:H7 when infection begins and how the bacterium selectively blocks these defenses. Several foodborne pathogens, including Shigella and Salmonella, use a similar secretion system to disrupt host immune responses and infect gut cells.

    F Wan, et al. IKK-beta phosphorylation regulates RPS3 nuclear translocation and NF-kappa B function during infection with Escherichia coli strain O157:H7. Nature Immunology. DOI 10.1038/ni.2007
     

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  • Posted: December 5th, 2010 - 2:13pm by Doug Powell

    British celebrities Katie Price, Victoria and David Beckham, and Rupert Grint (the Ginge in those terrible Harry Potter movies) have fallen for the charms of the micro-pig, which can sell for thousands of dollars.

    But the New Zealand Herald reports parents in Britain have been urged not to buy the miniature porcine pets for Christmas, with the Government set to warn this week that they risk spreading dangerous diseases.

    Ministers are so nervous about the craze, which has led to several owners being mis-sold regular piglets which grow into full-size sows, that guidance is to be rushed out next week specifically targeting prospective keepers of the pocket-sized creatures.

    The agency responsible for ensuring farm animals are healthy, disease-free and well looked after, will raise serious concerns about the hygiene threat posed by the animals.

    It will warn: "Before buying a pig, hobby keepers and owners of pet pigs or 'micro' pigs must make sure they are aware of, and understand their obligations, so they can keep their animals fit, healthy and legally compliant and help them to avoid unwittingly spreading disease."

    Sick pigs can pass on zoonotic diseases to humans, which can include the skin condition erysipeloid and the bacterium Streptococcus suis, which can lead to illness including meningitis and deafness in humans.

    Jim Paice, the British farming minister, said: "A pig is a farm animal, not a pet for Christmas. A micro-pig may sound like a popular gift idea - but beware the pig that grows too big. This year already I've heard some interesting stories about micro-pigs becoming bigger and outgrowing their homes. So if you'd like to see pigs this festive season, pop along to your local petting farm."

    Just not one of those E. coli petting farms.

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