Other Microorganisms

  • Posted: February 10th, 2012 - 1:04pm by Doug Powell

    Nearly 200 people across the state have reported illnesses after attending a high school cheer and dance event in Everett earlier this month.

    Preliminary survey results show at least 192 reports of illness from participants and adults who attended the event Feb. 4. Students and adults from Columbia River and Skyview high schools in Vancouver attended the event.

    The Washington State Department of Health is investigating the cause of the outbreak.

    As part of the investigation, questionnaires were sent to participants and their families and stool samples are being collected for testing at the state Public Health Laboratories.

    More than 3,000 people attended the event and more than 1,000 competed in the State Cheerleading and Salute to Spirit in cheer and dance/drill.

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  • Posted: February 7th, 2012 - 2:04am by Doug Powell

    Laboratory testing by the South Dakota Department of Health has identified Clostridium perfringens as the cause of the outbreak associated with the Pierre-Mitchell high school boys' basketball game held in Pierre, Jan. 31.

    KSFY ABC reports the investigation, which included voluntary questionnaires, implicated tacos as the source food of the outbreak; of those completing questionnaires, 75 per cent who ate the tacos reported becoming ill.

    The outbreak follows a similar C. perfringens outbreak in Las Vegas before Christmas in which ham was held at improper temperatures and inadequately reheated, sickening at least 21 people. As noted in the Las Vegas outbreak, the majority of C. perfringens outbreaks are often the results of improperly cooled food or food held at room temperature for extended periods.

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  • Posted: February 6th, 2012 - 5:28am by Doug Powell

    A cryptosporidium outbreak has emerged in Cairns, Queensland (that’s in Australia) with 51 cases in a month when the usual number of yearly cases was below 20.

    "If you’ve got 51 cases confirmed in a lab, chances are there are hundreds out there," Public Health medical officer Dr Steven Donohue said.

    In the letter, Dr Donohue instructed day care centres to exclude children with diarrhea until they have not had symptoms for 48 hours.

    He also recommended that swimming pools at day care centres be disinfected with adequate chlorination or refilled after each session.

    Queensland Health is also in the process of notifying swimming pool operators about the health risk, Dr Donohue said.

    "We’re not blaming the pools but they are a known factor in magnifying the outbreak," he said. "The pool operators should be very careful to make sure children with diarrhoea or dirty nappies are not in pools."

    In other crypto news, Artieda et al report in Eurosurveillance that on 24 November 2011, some smart pediatrician in the Basque Countr of northern Spain notified the epidemiological surveillance service of Gipuzkoa of a child with diarrhea in whose stools oocysts of Cryptosporidium had been isolated, as well as of an unusually large number of children with diarrhea who attended the same day-care center as the first child. All were tested for Cryptosporidium.

    Investigators concluded that from October to December 2011, an outbreak of 26 cases of cryptosporidiosis occurred in a day-care centre in Gipuzkoa, Spain. The infection spread from person to person and affected 24 children under two years of age (attack rate: 38%) and two caregivers. Cryptosporidium oocysts were observed in 10 of 15 samples. During 2010, only four cases of cryptosporidium were detected in Gipuzkoa, and 27 overall in Spain.

    At the time of the study, 63 children between 0 and two years of age attended the day-care, as well as the staff that consisted of six caregivers. There were 39 1–2-year-olds in classroom 2 (ground floor) and classrooms 3 and 4 (first floor), 13 in each. In classroom 1 (ground floor) and classrooms 5 and 6 (second floor), there were 24 0–1-year-olds, eight in each. A total of 24 children fell ill (attack rate: 38.1%), and only three of them were in the group of 0–1-year-olds. Children shared some activities by age group. Two caregivers also fell ill. In the microscopic analysis, Cryptosporidiumspp. oocysts were isolated in 10 of 15 stool samples, and no other enteropathogen was found in any of the samples studied.

    In addition, an environmental investigation was also undertaken by the local public health technicians. Information on hygiene practices and water usage was collected. The investigation detected deficiencies in hygiene procedures in the day-care centre. Single use paper towels were not available in any of the risk areas.

    As soon as the outbreak was confirmed, strengthening of hygiene measures was recommended to the staff of the day-care center, and they were asked to advise taking children to their pediatrician in the event of more cases. The recommended measures involved correcting the above-mentioned deficiencies, improving compliance with universal hygiene rules and, given the characteristics of the microorganism (resistance to chlorine), cleaning surfaces with 3% hydrogen peroxide. All measures recommended were implemented within 24-48 hours.

    A letter was sent to the parents informing them of the outbreak and advising good hygiene practices. In addition, they were told that those with diarrhea must not to use public swimming pools or other recreational water facilities for the duration of the outbreak.

    The full report is available at http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=20070.

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  • Posted: January 26th, 2012 - 7:26pm by Doug Powell

    When a strain of shiga toxin producing E. coli (VTEC O8:H19) was found in Spanish cucumbers in May 2011 during the Germany-based sprout outbreak that killed 53 – and subsequently proven to not be the outbreak strain – producers and politicians focused on how public health got it wrong, and demands for compensation.

    Shouldn’t it have been worrisome that any shiga-toxin producing E. coli was found at retail, in a cucumber?

    Researchers in Sweden are now reporting that microsporidia may be an underreported source of foodborne illness after cucumbers were linked to dozens of sick people visiting a hotel in Sweden. Abstract below.

    Microsporidia are spore-forming intracellular parasites that infrequently cause disease in immunocompetent persons. This study describes the first report of a foodborne microsporidiosis outbreak which affected persons visiting a hotel in Sweden.

    Enterocytozoon bieneusi was identified in stool samples from 7/11 case-patients, all six sequenced samples were genotype C. To confirm that this was not a chance finding, 19 stool samples submitted by healthy persons from a comparable group who did not visit the hotel on that day were tested; all were negative for microsporidia. A retrospective cohort study identified 135 case-patients (attack rate 30%). The median incubation period was 9 days.

    Consumption of cheese sandwiches [relative risk (RR) 4·1, 95% confidence interval (CI) 1·4–12·2] and salad (RR 2·1, 95% CI 1·1–4) were associated with illness. Both items contained pre-washed, ready-to-eat cucumber slices.

    Microsporidia may be an under-reported cause of gastrointestinal outbreaks; we recommend that microsporidia be explored as potential causative agents in food- and waterborne outbreaks, especially when no other organisms are identified.

    Epidemiology and Infection March 2012, 140:519-527

    V. Decraene, M. Lebbad, S. Botero-Kleiven, A.-M. Gustavsson and M. Lofdahl

     

     

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  • Posted: January 23rd, 2012 - 1:45am by Doug Powell

    Queensland Health is warning against consuming a batch of salami made by smallgoods company Backa Australia, after samples were found with high levels of bacteria.

    The company based in Beenleigh, in Queensland, has begun a voluntary recall of its chabi salami products sold at farmers markets in Brisbane and the Gold Coast last weekend (14-15 January 2012).

    The salami product tested positive to staphylococcus bacteria which can cause a type of food poisoning.

    Consumers who purchased the chabi products from farmers markets at Rocklea, Ascot, Chandler, Nerang, Palm Beach, and the Southport Sharks Club last weekend are advised not to consume them.

    A statement released by Queensland Health said, “While there is no reason to suspect other products of Backa Australia are also contaminated, all retail sales have been suspended until further tests can be carried out.”

    The Backa Australia chabi is unpackaged and not labelled.

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  • Posted: January 21st, 2012 - 4:35am by Doug Powell

    The Ottawa Citizen reports three flights from Cuba to Canada had at least 39 passengers returning with a variety of gastrointestinal illnesses.

    The Public Health Agency of Canada said Friday two flights that arrived in Ottawa from Cuba on Tuesday and Friday had 19 passengers suffering from symptoms such as vomiting, diarrhea, nausea and fever, while a Thursday flight from Cuba to Toronto had 20 passengers suffering from the same symptoms.

    “In all cases, quarantine officers assessed the situation, determined that the passengers did not have a disease listed in the Quarantine Act and thus did not pose a significant public health risk and passengers were released,” said Sylwia Gomes in an email reply to the Citizen.

    The sick passengers on the three flights came from at least four different resorts, she said.

    Early Friday morning, an Air Transat flight from Cuba carrying 260 passengers was detained at the Ottawa International Airport after 12 people complained of a stomach illness. The ill passengers were all from the same resort, so the concern forced Ottawa’s fire HAZMAT team to respond to the early morning incident.

    Passengers were assessed and then cleared after nearly 20 minutes of examination, said a spokesman for the Ottawa ambulance service.

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  • Posted: January 9th, 2012 - 5:41pm by Doug Powell

    Back when I thought going to conferences was important or at least a family diversion, my kids would rank the success of the trip based on the hotel water fountain.

    A long-ago meeting of the International Food Protection Association in Orlando ranked particularly high.

    A 2010 outbreak of Legionnaires' disease in Wisconsin has been linked to a decorative fountain in a hospital lobby, according to a study published in the February issue of Infection Control and Hospital Epidemiology, the journal of the Society for Healthcare Epidemiology of America.

    When the outbreak of Legionnaires' disease was detected among eight people in southeast Wisconsin, state and local public health officials worked closely with hospital staff to launch an investigation to determine the source of the outbreak.

    Through detailed interviews with patients, officials identified one hospital as the site of the contamination. Subsequent environmental testing within the hospital detected notable amounts of Legionella in samples collected from the "water wall" decorative fountain located in the hospital's main lobby.

    The investigation revealed that all eight patients had spent time in the main lobby where the fountain is located. This, along with the proximity of each patient's onset of illness and the degree of Legionella contamination in the fountain strongly support the conclusion that the decorative fountain was the source of the outbreak. Hospital officials quickly shut down the fountain when it was first suspected as a source, and notified staff and approximately 4,000 potentially exposed patients and visitors. Prior to the investigation, the decorative fountain underwent routine cleaning and maintenance.

    All eight patients in the Wisconsin outbreak recovered from the disease, and no cases occurred following the shutdown of the fountain.

    The outbreak is notable since none of the patients with Legionnaires' disease was an inpatient at the hospital when exposed. And some patients reported only incidental exposure to the fountain, such as delivering a package or visiting the hospital pharmacy.

    At the time of the outbreak there was no published information on the effectiveness of fountain disinfection and maintenance procedures to reduce the risks of Legionella contamination.

    "Since our investigation, the Wisconsin Division of Public Health has developed interim guidelines advising healthcare facilities with decorative fountains to establish strict maintenance procedures and conduct periodic bacteriologic monitoring for Legionella," said Thomas E. Haupt, MS, an epidemiologist with the Wisconsin Division of Public Health and the study's lead author. "The guidelines stress that until additional data are available that demonstrate effective maintenance procedures for eliminating the risk of Legionella transmission from indoor decorative water fountains in healthcare settings, water fountains of any type should be considered at risk of becoming contaminated with Legionella bacteria."

    Since this investigation, many healthcare facilities in Wisconsin shut down or removed decorative fountains in their facilities, while others enhanced their regular testing protocols to reduce the risk of Legionnaires' disease, the researchers report. Healthcare facility construction guidelines published after this outbreak stipulate that, "fountains and other open decorative water features may represent a reservoir for opportunistic human pathogens; thus they are not recommended for installation within any enclosed spaces in healthcare facilities."

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  • Posted: January 7th, 2012 - 4:20am by Doug Powell

    When toxoplasma in pork ranked second in last year’s top 10 riskiest combinations of foods and disease-causing microorganisms at $1.2 billion a year, some wondered, what?

    Now the Brits have chirped in, saying much more needs to be known about Toxoplasma gondii in the country’s food and especially the impact on pregnant women.

    The UK Food Standards Agency’s (FSA) Advisory Committee of the Microbiological Safety of Food (ACMSF) is seeking stakeholder views on its draft report relating to toxoplasma in the food chain (available at http://www.food.gov.uk/multimedia/pdfs/consultation/criskprotoxoplasmafoodchain.pdf).

    According to the UK National Health Service (NHS), food sources include undercooked or raw meat, raw cured meat (including Parma ham, salami) and unpasteurised goat’s milk, and the infection can pass between humans from a pregnant woman to an unborn baby.

    Although toxoplasmosis usually only causes mild flu-like symptoms in adults, the ACMSF said it can be fatal to babies, and has been linked with associated jaundice, eye infections and seizures.

    The FSA’s scientific advisory committee was asked to consider whether current evidence indicates a food safety issue that needs to be addressed, what food sources could present a significant risk and identify further work needed on UK prevalence and foodborne sources of toxoplasmosis.

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  • Posted: December 21st, 2011 - 4:28am by Doug Powell

    EKO Australia Pty Ltd is recalling batches of their imported noodles sold in NSW in specialty Asian grocery stores.

    The batches are being recalled because of the presence of Bacillus cereus, a harmful bacteria.
    The recalled products are:

    • Kamfen Buckwheat Noodles in 340g plastic bag with 'best before' date 2013.04.15
    • Kamfen Beijing Noodles, Abalone Chicken Soup Flavour in 160g plastic bag, with 'best before' date 2013.01.15
    • Kamfen Sichuan Noodles, Abalone Chicken Soup Flavour in 160g plastic bag, with 'best before' date 2013.01.15

    The recall applies only to the above batches of the products and dates.

    Consumers should not consume the products. Consumers can return the products to the place of purchase for a refund.

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  • Posted: December 15th, 2011 - 11:50pm by Doug Powell

    Just cook it doesn’t cut it.

    Especially when 10 per cent of 42 samples of packaging on chicken is contaminated with campylobacter on the outside.

    (And another reason to wrap any poultry in extra plastic, especially if placing into a reusable bag.)

    The Royal Environmental Health Institute of Scotland and other groups said the study confirmed the results of a previous survey by the group that also showed that approximately 10% of samples were contaminated.

    The Chairman of the West of Scotland Food Liaison Group (WOSFLG), Mr Leslie Paton said, “We know that it is fairly common to find Campylobacter in raw chicken but we were quite concerned about the extent to which the external surfaces of the packaging were also contaminated. There are implications for anyone handling such packaging and consumers should take care as there is a possibility of cross contamination to other surfaces and foods.”

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