Other Microorganisms

  • Posted: July 23rd, 2010 - 6:27pm by Ben Chapman

    Author: 
    Ben Chapman

    Last year renwoned New York Times food dude Mark Bittman posted a recipe for a botulism surprise (disguised as a garlic-in-oil product) that was ammended after a few letters about safety. Today, one of Bittman's colleagues and contributors to his blog, Kerri Conan writes about a way to make "quick pickles" apparently the wrong way.

    According to Conan, to make the skillet pickles:

    Start with trimmed whole or sliced vegetables (in this case green beans but I later made a batch with beets) and a hot skillet filmed with olive oil. Add some aromatics (the first garlic from the garden for the first; the other got a mixture of sesame and grape seed oils with scallions). When the seasoning just starts to sputter, toss in the veg. Move them around in the pan a bit so the color brightens evenly, then stir in a splash each of water and vinegar (I used sherry v. for the beans and rice v. for the beets, but your call).

    Bring the whole lot to a boil and cook until the vegetables are about two clicks less tender than you eventually want them. Remove the pan from the heat to cool. Empty everything into a jar and chill, shaking the contents often. Polish them off in a few days.

    Conan's recipe sounds a bit more like a salad, but included in this post (unlike Mark's last year) is the addition of a refrigeration step for preserving the product, and the mention of eating it within a couple of days. Chilling is a good tip, green beans with the addition of a "splash" of vinegar with a bunch of oil left on the counter for a few days could result in a serious public health issue. The pathogen of concern, Clostridium botulinum, could exist as spores on the suggested ingredients. Heating the foods may activate the spores and placing the flavor-making components into certain oils can create the perfect environment (oxygen-free and low acid) for cell growth and botulinum toxin formation.

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  • Posted: July 22nd, 2010 - 7:21am by Doug Powell

    When someone says Australian boarding school, all I can think of is the highlarious television show, Summer Heights High.

    Some researchers from Canberra report in the current issue of Foodborne Pathogens and Disease about an outbreak of Campylobacter jejuni gastroenteritis at an Australian boarding school.

    Thirty-five cases of gastroenteritis were recorded among 58 questionnaire respondents, with 14 of 18 persons submitting fecal samples having confirmed C. jejuni infections. Attendance at one evening meal was statistically associated with illness (ratio of proportions of 3.09; 95% confidence intervals: 1.21, 14.09; p = 0.02). There was no statistically significant association between any single food provided at the implicated evening meal and illness, suggesting that the potential cause of the outbreak was a cross-contamination event.

    The study highlights the potential of cross-contamination as a cause of epidemic campylobacteriosis. The application of molecular techniques to aid epidemiological investigation of recognized C. jejuni outbreaks is illustrated.
     

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  • Posted: July 20th, 2010 - 9:34pm by Sol Erdozain

    Author: 
    Sol Erdozain

    Lindsay Lohan has been making headlines lately for the whole drunk driving and defying court thing. I miss the good old “Mean Girls” days. She looked so innocent at the beginning of that movie, when the only place she felt safe eating at was in the toilet stall.

    Maybe she was on to something.

    "There's more faecal bacteria in your kitchen sink than in your toilet after you flush it. People nuke their bathrooms, but not their kitchens."

    The research, from the University of Arizona, also points out that the toilet is also cleaner than cutting boards in the kitchen, computer keyboards in the office and workplaces where there are children.

    Ok, so maybe Lindsay did it because it was in the script and it’s not exactly a trend to follow in dining, but the point is sanitation.

    Clean kitchen surfaces, use a separate cutting board for meat and wash your and your kids’ hands.
     

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  • Posted: July 17th, 2010 - 9:43am by Doug Powell

    Something’s going at a farmers’ market in east-central Iowa, with reports surfacing that more than 10 people are sick with foodborne illness, possibly related to a freshly prepared fruit and vegetable product sold at the market.

    The Iowa Department of Public Health reminded people visiting a farmer's market to only buy from vendors who keep freshly prepared fruit and vegetable products cold.

    Once you buy the food make sure you store them in a cold place, and eat them within a few days.
     

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  • Posted: July 13th, 2010 - 4:13am by Doug Powell

    Continuing on with the cultural preferences for various protein sources, Vietnam closed around 60 dog meat restaurants and slaughterhouses in outlying parts of Hanoi after cholera bacteria were found in two of the animals.

    Le Anh Tuan, director of the Hanoi health department, said businesses will be allowed to reopen in two weeks provided they are cholera-free and the owners can show their meat comes from hygienic sources.

    Dog meat is a delicacy for many Vietnamese, who believe eating it in the second half of the lunar calendar month helps dispel bad luck.
     

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  • Posted: July 12th, 2010 - 5:24pm by Sol Erdozain

    Author: 
    Sol Erdozain

    I love Jimmy John’s veggie subs. I think the secret ingredient is in the guacamole spread-thingy. I avoid the sprouts though; not just because they’ve been linked to outbreaks, but I find they ruin the whole flavor chemistry.

    It appears that now I might have reason to avoid the guacamole spread-thingy as well.

    Research from the CDC shows that “nearly 1 out of every 25 restaurant-associated foodborne outbreaks with identified food sources between 1998 and 2008 can be traced back to contaminated salsa or guacamole.”
     

    The risks might arise from big batches of the stuff being stored at improper temperatures, or contamination from mishandling the raw ingredients.

    Next time I’m at Jimmy John’s, I’ll make sure I ask how their delicious guacamole is prepared and stored so as not to make any rash decisions about completely avoiding it.


     

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  • Posted: July 11th, 2010 - 3:05pm by Doug Powell

    I’m not familiar with the practice, but apparently when crews shut off the city's irrigation lines in the fall in Saratoga Springs, Utah, some residents tap into culinary pipes, getting water for outdoor use.

    Deseret News reports that the city imposed the fine for cross-connecting culinary and irrigation lines after a Campylobacter outbreak sickened dozens of residents earlier this summer. Cross-connecting can contaminate culinary water and may have caused the outbreak.

    Mayor Mia Love said anyone caught cross-connecting with a previous warning will be fined $10,000, adding, "It certainly sends a message saying we're very serious about keeping the water clean. We're not taking it lightly."
     

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  • Posted: July 2nd, 2010 - 1:47pm by Doug Powell

    Officials in Taiwan said today dried tofu in vacuum-sealed plastic sacks was suspected in a series of botulinum poisoning cases.

    Taiwan has seen eight botulinum poisoning cases involving 11 people since April. One person was killed, five remain hospitalized and five others have been discharged from hospitals after treatment.

    The Department of Health said three soybean product factories use a sterilized vacuum packaging process, and that only tofu products that are thoroughly sterilized before being vacuum-packed should be stored or displayed in room temperature environments.

    Products from factories that do not properly sterilize their dried tofu should be refrigerated until eating, health officials said.
     

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  • Posted: June 30th, 2010 - 1:57pm by Doug Powell

    The Centre for Health Protection (CHP) of the Hong Kong Department of Health has received reports of 11 more people in food poisoning cases related to a restaurant in Jordan.

    As with the earlier clusters, they ate food from the restaurant on or before June 27.

    Stool specimens from six affected people in earlier clusters yielded positive result for Vibrio parahaemolyticus.

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  • Posted: June 24th, 2010 - 3:28pm by Doug Powell

    I didn’t even come up with that headline. Those science journal writers are developing a sense of humor.

    Eriksen et al. write in Eurosurveillance today:

    Food poisoning outbreaks caused by Clostridium perfringens enterotoxin occur occasionally in Europe but have become less common in recent years. This paper presents the microbiological and epidemiological results of a large C. perfringens outbreak occurring simultaneously at two weddings that used the same caterer.

    The outbreak involved several London locations and required coordination across multiple agencies. A case-control study (n=134) was carried out to analyze possible associations between the food consumed and becoming ill. Food, environmental and stool samples were tested for common causative agents, including enterotoxigenic C. perfringens. The clinical presentation and the epidemiological findings were compatible with C. perfringens food poisoning and C. perfringens enterotoxin was detected in stool samples from two cases.

    The case-control study found statistically significant associations between becoming ill and eating either a specific chicken or lamb dish prepared by the same food handler of the implicated catering company. A rapid outbreak investigation with preliminary real-time results and the successful collaboration between the agencies and the caterer led to timely identification and rectification of the failures in the food handling practices.

    In the discussion, the authors write,

    A blast chiller is normally used for cooling large quantities of food quickly by this particular caterer; however it was not being used appropriately at the time of the incident. Temperature control of foods during preparation, cooling, transportation and reheating was poor. Furthermore, the vans used for food transport had no refrigeration and these events took place in July. The evidence of insufficient hygiene, cooling and reheating at the catering company during transport and at both venues (according to environmental health department inspections) are in keeping with a toxin-related gastroenteritis outbreak, including C. perfringens.
     

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