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04.11.2024 - Foods

Current EHEC Outbreak in the USA

The cause of the current EHEC outbreak in the USA has not yet been fully clarified. Meanwhile, more than 90 cases of illness have been reported in 13 states. The number of unreported cases of people actually affected by this foodborne illness is certainly significantly higher. Nearly 30 people had to be treated in hospitals and there has been one fatality.

So far, the focus of investigations into the cause has been on fresh onions and the beef from McDonald's Quarter Pounder burgers. However, to date, there is no definite proof of which foods are truly responsible for this outbreak. According to reports by the US health authorities, CDC and FDA, the causative agent of these EHEC infections is the pathogenic E.coli strain O157:H7. This pathogen belongs to the pathogenic STEC strains (Shiga toxin-producing Escherichia coli). These bacteria are particularly feared for their dangerous ability to cause the hemolytic-uremic syndrome (HUS) with kidney failure as a consequence.

An important reservoir of Escherichia coli and also of STEC strains is the intestines of cattle and ruminants. Therefore, these bacteria are also found in the raw meat of these animals, in raw milk, but also in raw plant foods. Through the excretions of the animals, contamination of the plants occurs in the field.

Through appropriate hygiene and prevention measures, as well as sufficient heating of food, the risk of EHEC infections can be significantly reduced.

In our laboratory, we conduct daily tests for Escherichia coli and STEC in foods. Our customer advisors are very happy to assist you with any questions.