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Showing posts with label Escherichia coli. Show all posts
Showing posts with label Escherichia coli. Show all posts

Monday, June 13, 2011

Food chain at risk of being poisoned by terrorist groups - Telegraph

Escherichia coli: Scanning electron micrograph...Image via Wikipediahttp://www.telegraph.co.uk/news/uknews/terrorism-in-the-uk/8557373/Food-chain-at-risk-of-being-poisoned-by-terrorist-groups.html
Manufacturers and retailers have been told that their sector is vulnerable to attacks by ideologically and politically motivated groups that may seek to cause widespread casualties and disruption by poisoning food supplies.
The warning from the Centre for the Protection of National Infrastructure [CPNI], which operates as part of the Security Service, comes as experts warned the deadly E.coli outbreak in Germany has highlighted the vulnerability of the food chain and how quickly bacteria can spread.
The highly virulent strain has claimed 18 lives and left more than 1,800 seriously ill, with the true number of cases expected to be far higher.
A senior German doctor last night called for an investigation into the possibility that the bacteria had been spread deliberately.
Klaus-Dieter Zastrow, chief doctor for hygiene at Berlin’s Vivantes hospital, said: “It’s quite possible that there’s a crazy person out there who thinks 'I’ll kill a few people or give 10,000 people diarrhoea’. It’s a negligent mistake not to investigate in that direction.”
In the past, the main threat of deliberate contamination of food has been from criminals attempting extortion or from individuals with a grudge, but security officials fear there is an emerging threat from extremist groups such as al-Qaeda, dissident republicans in Northern Ireland and animal rights activists.
The CPNI has asked food and drinks producers, suppliers and supermarkets to tighten security at plants and depots and to identify vulnerabilities in supply chains.
One official from the CPNI spoke about the threat at a meeting of food safety experts. Addressing a conference of the Society for General Microbiology, he said: “The UK suffers from a low level of malicious contamination of food by the bad, the mad and the sad. Now it has to consider the possibility of food supplies being disrupted by politically motivated groups.”
The E.coli outbreak is thought to have been caused by poor hygiene at a farm, in transit, or at a food outlet.
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Thursday, June 2, 2011

WHO: E. coli outbreak may be from toxic new strain

The original advisory opinion was requested by...Image via Wikipediahttp://www.msnbc.msn.com/id/43248315/ns/health-food_safety
Scientists on Thursday blamed Europe's worst recorded food-poisoning outbreak on a "super-toxic" strain of E. coli bacteria that may be brand new.
But while suspicion has fallen on raw tomatoes, cucumbers and lettuce as the source of the germs, researchers have been unable to pinpoint the food responsible for the frightening illness, which has killed at least 18 people, sickened more than 1,600 and spread to least 10 European countries.
An alarmingly large number of victims — about 500 — have developed kidney complications that can be deadly.
Chinese and German scientists analyzed the DNA of the E. coli bacteria and determined that the outbreak was caused by "an entirely new, super-toxic" strain that contains several antibiotic-resistant genes, according to a statement from the Shenzhen, China-based laboratory BGI. It said the strain appeared to be a combination of two types of E. coli.
"This is a unique strain that has never been isolated from patients before," Hilde Kruse, a food safety expert at the World Health Organization, told The Associated Press. The new strain has "various characteristics that make it more virulent and toxin-producing" than the many E. coli strains people naturally carry in their intestines.
However, Dr. Robert Tauxe, a foodborne-disease expert at the U.S. Centers for Disease Control and Prevention, questioned whether the strain is truly new, saying it had previously caused a single case in Korea in the 1990s. He said the genetic fingerprints from the two samples may vary a little, but not enough to say that the strain in Europe is new.


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Wednesday, June 1, 2011

European food outbreak soars; mystery deepens

Escherichia coli - Scanning Electron MicroscopyImage via Wikipediahttp://beta.news.yahoo.com/european-food-outbreak-soars-mystery-deepens-144646524.html
BERLIN (AP) — The number of people hit by a massive European outbreak of foodborne bacterial infections is one third higher than previously known and a stunningly high number of patients suffer from a potentially deadly complication than can shut down their kidneys, officials said Wednesday.
The death toll rose to 17, with German authorities reporting that an 84-year-old woman with the complication had died on Sunday.
Medical authorities appeared no closer to discovering either the source of the infection or the mystery at the heart of the outbreak: why the unusual strain of the E. coli bacteria appears to be causing so many cases of hemolytic uremic syndrome, which attacks the kidneys and can cause seizures, strokes and comas.
"This particular strain we're dealing with now seems to be unique," said Dr. Hilde Kruse, program manager for food safety at WHO Europe:
Germany's national health agency said 1,534 people in the country had been infected by EHEC, a particularly deadly strain of the common bacteria found in the digestive systems of cows, humans and other mammals. The Robert Koch Institute had reported 1,169 a day earlier.
The outbreak has hit at least nine European countries but virtually all of the sick people either live in Germany or recently traveled there.
The Robert Koch Institute said 470 people in Germany were suffering from hemolytic uremic syndrome, or HUS, a number that independent experts called unprecedented in modern medical history. HUS normally occurs in 10 percent of EHEC infections, meaning the number seen in Germany could be expected in an outbreak three times the size being currently reported.
That discrepancy could indicate that a vast number of cases haven't been reported because their symptoms are relatively mild, medical experts said.
But they also offered another, more disturbing theory — the strain of EHEC causing the outbreak in Europe could be more dangerous than any previously seen.
"There may well be a great number of asymptomatic cases out there that we're missing. This could be a much bigger outbreak than we realize right now," said Paul Hunter, a professor of health protection at the University of East Anglia in England. "There might also be something genetically different about this particular strain of E. coli that makes it more virulent."
There are hundreds of different E. coli strains in the environment — every person naturally carries the bacteria — but only a very small percentage are dangerous.
German Agriculture Minister Ilse Aigner said scientists were working nonstop to find the source of the germ that is believed to have been spread in Europe on tainted vegetables — and where in the long journey from farm to grocery store the contamination occurred.
"Hundreds of tests have been done and the responsible agencies ... have determined that most of the patients who have been sickened ate cucumbers, tomatoes and leaf lettuce and primarily in northern Germany," Aigner said on ARD television. "The states that have conducted the tests must now follow back the delivery path to see how the cucumbers, or tomatoes or lettuce got here."
German authorities initially pointed to cucumbers from Spain after people in Hamburg fell ill after eating fresh produce. After tests of some 250 samples of vegetables from around the city, only the three cucumbers from Spain and one other of unknown origin tested positive for E. coli.
But further tests showed that those vegetables, while contaminated, did not cause the outbreak. Officials are still warning all Germans to avoid eating raw cucumbers, tomatoes or lettuce.
Some experts said it might be impossible to ever identify what caused the outbreak, as much of the tainted fresh produce may already have disappeared from markets.
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