Category Archives: VTEC

Ireland -12 cases of E.Coli now confirmed at Dunmore creche

Connach Tribune

12 cases of E.Coli have now been confirmed following an outbreak last week at Dun Beag creche in Dunmore.
The HSE’s multidisciplinary Outbreak Control Team says four cases have involved hospitalisation.
E.Coli VTEC can spread in a number of ways including contact with infected animals, contaminated soil, water or certain foods, and can be spread among toddlers who are not toilet trained.
The majority of cases of VTEC get better with no treatment and without hospitalisation.
However the most serious complication is Haemolytic Uraemic Syndrome or HUS which occurs in up to 10% of VTEC cases.
This can lead to anaemia and kidney failure and requires intensive medical treatment.
The number of cases of VTEC notified in Ireland each year is increasing with 927 cases confirmed in 2017.

Research – A Novel Selective Medium for Simultaneous Enrichment of Shiga Toxin–Producing Escherichia coli and Salmonella in Ground Beef

Journal of Food Protection 

 

Microbiological analysis of ground beef for contamination by both Salmonella and Shiga toxin–producing Escherichia coli (STEC) is performed by the U.S. Department of Agriculture, Food Safety Inspection Service (FSIS), as part of its Performance Standards Verification Testing program. FSIS has established a zero tolerance for STEC serotype O157:H7 and serogroups O26, O45, O103, O111, O121, and O145 because they are regarded as adulterants. The detection and isolation of these specific serogroups presents a technical challenge necessitating time-consuming and costly laboratory procedures that often exceed the technical capabilities of many small internal and reference laboratories. We describe here a method using a novel STEC and Salmonella selective (SSS) broth that allows for simultaneous selective enrichment of STEC and Salmonella sp., providing isolation and detection from the same broth. The method only involves direct plating from beef enrichments to detect suspect isolates that can be easily confirmed by using immunoassays or PCR, rendering the isolation simpler and less costly than the current described methods. In a side-by-side comparison with modified tryptic soy broth (mTSB), the use of SSS broth resulted in primarily isolating STEC and Salmonella sp., while substantially suppressing the growth of other gram-negative Enterobacteriacae by 90%. Significantly more (χ2 < 3.84) samples containing E. coli O157:H7 and STEC O26, O111, O121, and O145 and a nondifferent (χ2 > 3.84) number of samples containing STEC O103 and O45 were identified when enriching in SSS broth. Coenrichment using six different Salmonella serovars showed numerically greater but not significant (χ2 < 3.84) positive samples by using SSS broth compared with mTSB for a majority of serotypes.

RASFF Alert – STEC E.coli – Chilled Beef

kswfoodworld food safety poisoning

RASFF-shigatoxin-producing Escherichia coli (stx1+ /25g) in chilled beef from Uruguay in the Netherlands

Research – Petting zoos as sources of Shiga toxin-producing Escherichia coli (STEC) infections

X-MOL

Despite their general low incidence, Shiga toxin-producing Escherichia (E.) coli (STEC) infections are considered an important public health issue due to the severity of illness that can develop, particularly in young children. We report on two Austrian petting zoos, one in Tyrol (2015) and one in Vorarlberg (2016), which were identified as highly likely infection sources of STEC infections. The petting zoo related cases involved a case of hemolytic uremic syndrome (HUS) due to STEC O157:HNM in 2015 and an outbreak of STEC O157:H7 infections affecting five young children and two adults in 2016. The HUS case accounted for 2.8% of the 36 STEC O157:HNM/H7 infections notified in Austria in 2015 (5,9% of 17 HUS cases). The seven cases described for 2016 accounted for 4.0% of the 177 human STEC infections documented for Austria in 2016, and for 19% of the 36 STEC O157:HNM/H7 infections notified that year. The evaluation of the STEC infections described here clearly underlines the potential of sequence-based typing methods to offer suitable resolutions for public health applications. Furthermore, we give a state-of-the-art mini-review on the risks of petting zoos concerning exposure to the zoonotic hazard STEC and on proper measures of risk-prevention.

A table of petting zoo outbreaks is available at http://www.barfblog.com/wp-content/uploads/2017/08/Petting-Zoo-Outbreaks-Table-7-26-17.xlsx

Ireland- Increase in food poisoning cases

Irish Health 

 

People are being urged to take extra care when handling and preparing food as there has been an increase in E.coli infections in recent weeks.

E.coli is a bacterium that lives in the intestines of healthy humans and animals. Verocytotoxigenic Escherichia coli (VTEC) is a particular type of E.coli that lives in the gut of healthy sheep and cattle. VTEC is a common cause of food poisoning, which can lead to symptoms such as bloody diarrhoea and abdominal cramps.

While patients usually recover within five to 10 days, some people, especially young children and older people, can suffer a complication called haemolytic uraemic syndrome (HUS), in which the red blood cells are destroyed and the kidneys fail. This happens in 5-8% of cases.

According to the Health Protection Surveillance Centre (HPSC), almost 100 cases of VTEC have been notified over the last 10 days, which is three times higher than the figure for this time last year.

It is reminding people of the importance of always washing your hands before and after handling food, and always washing fruit and vegetables before consuming.

It is also reminding people of the importance of ensuring that minced meats are cooked all the way through.

“Eating meat, especially minced beef, that has not been thoroughly cooked all the way through to kill these VTEC bugs can cause food poisoning. Therefore, to ensure that minced meat burgers are safe to eat, they should be cooked to a core temperature of 75°C.

“VTEC can also be found in the stools of an infected person and can be passed from person to person if hygiene or hand-washing habits are inadequate. This is particularly common among toddlers who are not toilet trained. Family members and playmates of these children are at high risk of becoming infected,” the HPSC said.

According to the HSE’s assistant national director of public health, Dr Kevin Kelleher, while investigations have not identified a specific reason for the increase in VTEC infections, the current good weather probably has a role to play.

“We would like to remind people to be careful about food safety during this heatwave to protect themselves against food poisoning. This hot weather provides the right conditions for bacteria such as VTEC to grow and multiply on foods, which can lead to high numbers of cases of food poisoning in adults and children.

“Not washing hands after handling raw meat, not washing fruits and vegetables and undercooking minced meats, such as beef burgers, are common ways of getting food poisoning at this time of year,” he commented.

The HPSC and Safefood recommends four simple steps to reduce the risk of food poisoning:

-Clean – always wash your hands before and after preparing, handling and eating food, after using the toilet or after playing with animals
-Cook – make sure that food is cooked all the way through in order to destroy any harmful bacteria that might be present
-Chill – keep food cool in order to prevent bad bacteria from growing. Make sure that your fridge is at the correct temperature to keep cold foods chilled (5°C or below)
-Separate – to prevent cross-contamination, always separate raw and cooked foods during storage and cooking and never let raw food, for example raw meat, come into contact with ready-to-eat foods, such as salads.

Canada – Food Recall Warning – Certain extra lean ground beef products recalled due to E. coli O157

CFIA

Recall details

Ottawa, June 29, 2018 – The Butcher’s Blend is recalling certain extra lean ground beef products from the marketplace due to possible E. coli O157 contamination. Consumers should not consume the recalled products described below.

Recalled products

Brand Name Common Name Size Code(s) on Product UPC
None Extra Lean Ground Beef Approx. 1 lb None – Sold by The Butcher’s Blend at the Western Fair District Farmer’s Market on June 16, 2018 None
Mitchell’s Butcher’s Blend / Old East Village Grocer Extra Lean Ground Beef Approx. 1 lb Best Before JUN 23/18 Starts with 0 200150
Mitchell’s Butcher’s Blend / Old East Village Grocer Extra Lean Ground Beef Approx. ½ lb Best Before JUN 23/18 Starts with 0 200150

RASFF Alert – STEC E.coli – Chilled Beef

kswfoodworld food safety poisoning

RASFF-shigatoxin-producing Escherichia coli (stx2+; eae- /25g) in chilled beef from Belgium in Belgium

USA – FDA Investigating Multistate Outbreak of E. coli O157:H7 Infections Linked to Romaine Lettuce from Yuma Growing Region

FDA Eurofins Food Testing UK

Update

The FDA, along with CDC and state partners, initiated an environmental assessment in the Yuma growing region to further investigate potential sources of contamination linked to this outbreak.

Samples have been collected from environmental sources in the region, including water, soil, and cow manure. Evaluation of these samples is ongoing.

To date, CDC analysis of samples taken from canal water in the region has identified the presence of E. coli 0157:H7 with the same genetic finger print as the outbreak strain. We have identified additional strains of Shiga-toxin producing E. coli in water and soil samples, but at this time, the samples from the canal water are the only matches to the outbreak strain.

Analysis of additional samples is still ongoing, and any new matches to the outbreak strain will be communicated publicly and with industry in the region.

Identification of the outbreak strain in the environment should prove valuable in our analysis of potential routes of contamination, and we are continuing our investigation in an effort to learn more about how the outbreak strain could have entered the water and ways that this water could have come into contact with and contaminated romaine lettuce in the region.

Research – Shiga toxin-producing E. coli found in food

Science Daily 

 

Escherichia coli (E. coli) is a germ that occurs naturally in the gut of mammals and birds, as well as in the human intestinal flora. However, certain E. coli types can cause severe diarrhea in humans. These virulent E. coli types include Shiga toxin-producing E. coli (STEC), also known as Verotoxin-producing E. coli (VTEC).

Their damaging effect is due to the fact that STEC produce toxins known as Shiga toxins (Stx), which can cause disease in the human gut. As the best known STEC representative, an enterohaemorrhagic E. coli (EHEC) strain of the serotype O104:H4 was responsible for numerous severe cases of haemolyticuremic syndrome (HUS) and bloody diarrhea in Germany in 2011, as a result of which 53 people died.

Ireland – FSAI Recall – E.coli VTEC in Raw Milk Cheese

FSAIfsai

Verocytotoxigenic Escherichia coli (VTEC) has been detected in several batches of gouda cheese produced by Kilshanny Farmhouse Cheese using raw milk.  The company has been ordered by the Department of Agriculture, Food and the Marine to withhold placing any further batches on the market. Consumers are advised not to eat the implicated cheese.