Sunday , December 5 2021

There is a way to keep E. coli out of Roma felt?


S & # 39; anywhere in Canada, 24 people underwent experience & # 39; & # 39 fear; caused by the simple act of eating Romans felt.

It happened sometime in & # 39; late or early October in & # 39; in November, when without knowing inġerixxu dangerous pathogens – E. coli O157: H7 – hiding in lettuce leaves.

Days later started to feel symptoms, possibly pain & # 39; headache or mild fever. They were developed nausea, abdominal cramps and bloody diarrhea. If they were so anxious to put their doctor or room & # 39; emergency.

Eight were sick enough to be admitted to hospital although there is not much doctors can do, but to monitor them and keep them hydrated. Antibiotics are never used when doctors detect E. coli O157 because it can & # 39; to make symptoms worse.

If infection & # 39; E.coli is serious enough, you & # 39; cause kidney failure. And what happened to one person, who may have needed dialysis, possibly for life.

"The lightning strikes twice '

At almost the same time the previous year, at 48 Canadian & # 39; Ontario, Quebec and Canada & # 39; Atlantic had experiences & # 39; sadness alike after eating roman lettuce and infettew the same tension & # 39; E. coli.

Seventeen people ended up in hospital and Canadian died.

At the end of & # 39; in February, the Health Canada quietly close the file without knowing where issued as lettuce or been infected.

M & # 39; there is no way, as far as I am concerned, someone has ill for something that is not dangerous.– Lawrence Goodridge, McGill University

The bacteria suffering from injured fled out all winter x & # 39; nowhere in coastal areas of central California just to re-hit in & # 39; October has made at least 63 sick people in Canada and the US and led to alarm in North America & # 39; on to prevent Roma felt.

For every person who has been diagnosed with & # 39; E. Health coli O157, the Canada estimates that another 20 were probably infected but have never been diagnosed.

This investigators & # 39; time an important indication – set & # 39; the DNA fingerprints linking the two outbreaks.

"To actually get the same pressure, associated with & # 39; the same product, at the same time of year, when you say that the lightning hit twice, that is exactly what is" said Keith Warriner, science professor & # 39; Food at the University & # 39; Guelph.

"The evidence is pretty good to the same source. The question x & # 39; is that source?" said Lawrence Goodridge, security food scientist at McGill University.

Lawrence Goodridge, scientist of food safety at McGill University, studying biological methods to control food-borne pathogens. He said the outbreak is both "nothing to panic" and "something we work with & # 39; urgency". (Photo: Alex Tran)

The main hypothesis is that the animal, probably cattle, were the source of the E. coli.

And the way & # 39; infection has strong likelihood of water & # 39; Irrigation contaminated by cattle feces.

"We get so many outbreaks now"

An estimated 250 Canadians are infected with & # 39; dangerous Shiga toxin producing E. coli each year, after eating food to be safe and b & # 39; his health. About eight people die.

"M & # 39; there is no way, as far as I am concerned, someone has ill for something that is not dangerous," said Goodridge. "Both are far out & # 39; names but at the same time is something we have to work with & # 39; urgency".

The scientists first discovered this dangerous race & # 39; E. coli in 1982 and has since caused a series of & # 39; Outbreaks & # 39; profile in beef, lettuce, spinach and other fresh products throughout North America & # 39; On.

The cows are one of the main sources of & # 39; E. coli O157. Vaccine & # 39; the food produced in Canada was developed to reduce E. Coli in cattle and reduce the risk of & # 39; Human infections. (Shutterstock / Sergey Bogdanov)

"It happens when we now so serious' outbreaks, Warriner said.

But after three decades, to m & # 39; no consensus on x & # 39; must be done to avoid human exposure.

Relying on testing foods for E. coli is not practical, say experts.

"For practical purposes it is now difficult for all foods tested with & # 39; rigor because even small amounts of & # 39; contamination can cause serious illness," said Herb SCHELLHORN, professor of biology making E. research coli at McMaster University.

"Its needles in the grass," said Warriner.

Improving the ability to trace food back to the growing area through & # 39; better labeling is useful only after someone is already ill.

"We can identify what had felt sick. But it will not stop you sick." – Keith Warriner, University & # 39; Guelph

"I am a little concerned with the emphasis on traceability since it is kind of like putting Band-Aid on the situation because if issolvix problem will not need to trace food back," said Goodridge.

"We can identify what had felt sick. But it will not stop you sick," said Warriner.

Scientists are studying ways to kill E. coli in & # 39; irrigation water and in & # 39; crops harvested by & # 39; sterilization, irradiation or bio-pesticides.

The vaccine Made-in-Canada is not being used

But & # 39; they are addressing & # 39; E. coli at its primary source, in animal intestines?

What is that the scientist & # 39; University & # 39; British Columbia Brett Finlay was trying to make in developing a vaccine produced in Canada for cattle to reduce the amount of & # 39; E. coli released into the environment.

Years ago Finlay discovered how bacteria attach to & # 39; intestinal cells.

Brett Finlay, University of mikrobijistru & # 39; British Columbia, developed a cattle vaccine to reduce infections & # 39; E. coli in humans.

On the basis of & # 39; that discovery, he worked with & # 39; colleague at the University & # 39; Saskatchewan to formulate the vaccine.

With support from research foundations of Canada and approximately $ 25 million in & # 39; public funding from federal and provincial governments, Canadian small company called Bioniche successful discovery & # 39; Finlay f & # 39; world first.

The vaccine was tested in & # 39; & # 39 series, studies show that it was safe, and did not harm the animals.

Team & # 39; independent Scottish researchers developed a computer model to calculate the immunization of cattle can & # 39; reduce human infections to 85 percent.

Almost killed. It was very sad. The whole thing was very sad.– Graeme McRae, former president of Bioniche

The vaccine was approved by the Canadian Agency for Food Inspection in 2008. But Canadian cattle producers were not convinced. And the vaccine went wide from production.

"The whole thing has become very political", said Graeme McRae, the former president of Bioniche. The company m & # 39; longer in business. "Almost killed. It was very sad. The whole thing was really sad."

One problem: the cattle producers were reluctant to pay the vaccine because not improved their animal health and did not add any value to their operations.

And the federal government to bring offrax & # 39; the estimated annual cost of & # 39; $ 50 million although the vaccine can & # 39; reduces the risk of & # 39; infection & # 39; E. coli man.

"It's a bit ironic. Because creativity & # 39; the idea of ​​vaccinating cattle for human disease, of landing never ever to who will take it and [be] responsible for it, "said Finlay.

The cattle producers still have doubts

Today vaccine manufacturing plant in & # 39; Belville, Ont., Settle idle. And the original patents have been returned to UBC where they are staying in the cabinet submission x & # 39; nowhere, available to anyone who can & # 39; he wants to bring again the idea.

"It's very disappointing to do the work and find something to make a difference, and probably make a difference," said Rodney Moxley, a professor of veterinary medicine and biomedical sciences at the University & # 39; Nebraska. He has published nine & # 39; peer-reviewed papers that show the vaccine worked after tested in & # 39; more than 20,000 animals.

"If they can simply resolve questions about who will pay for that you & # 39; place it back on the table in & # 39; & # 39 terms, putting her out there."

But cattle producers still have their doubts

"There was considerable uncertainty about the effectiveness of & # 39; that vaccine," said Reynold Bergen, the scientific director of the Research Council of Livestock Beef Association Canadian Canadian Livestock, and added that the industry is studying other ways to reduce E. coli in cattle.

"Dissemination & # 39; E. Coli is & # 39; real concern for the industry", he said.

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