Experts: Seeds tainted by E. coli still out there

Experts: Seeds tainted by E. coli still out there (AP)
Racks containing seeds inside a warehouse at seed company Thompson and Morgan at their headquarters in Ipswich, England, Sunday June 26, 2011. French and British food safety officials are investigating possible contamination of seeds from British company Thompson and Morgan which may be linked to an E. coli outbreak near Bordeaux, France, where eight people have been hospitalized following an E. coli outbreak. (AP Photo / Max Nash, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVES

(AP) -- Health experts warned Thursday there could be more E. coli cases across Europe and elsewhere after finding that recent deadly outbreaks were probably linked to contaminated Egyptian fenugreek seeds.

They say the fenugreek seeds are likely to blame for a massive food poisoning outbreak in Germany beginning in May that killed 49 people and infected over 4,000, as well as a much smaller outbreak in France in June. More than 800 people have developed a life-threatening kidney complication after catching the bug.

In a report issued this week by European authorities, the French E. coli strain was found to be genetically similar to the one in Germany. Fenugreek seeds imported from Egypt are being blamed for both outbreaks, but scientists still haven't found any tainted seeds.

"There's no smoking gun," Ian Henderson, a professor of microbial biology at the University of Birmingham, told The Associated Press on Thursday. "But it would be unusual to have the same rare strain found in Germany and France without some link."

Fenugreek leaves are commonly used as an herb and also in curry.

If the fenugreek seeds were contaminated at the source - during production in Egypt - they could have been freeze-dried before being sold, allowing the E. coli bacteria to live for years. Once water is added to grow the sprouts, the entire sprout would be infected and washing wouldn't help get rid of the potentially .

" are biological time bombs," Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, told the AP. "If they're infected, once they're rehydrated and distributed, they could take the bacteria anywhere."

Osterholm said the seeds could also cross-contaminate other products or be sold in a seed mix.

European food safety and have asked Germany and France to quickly find out where seeds from the suspected contaminated Egyptian batch may have been sold. French farmers apparently bought their seeds from a British mail-order company.

Germany's consumer protection and food safety agency refused to say Thursday whether the organic farm in northern Germany implicated in the deadly E. coli outbreak used seeds from Egypt or whether other German farms had received Egyptian seeds. However, the agency said it was investigating the report.

Experts said it was crucial to trace exactly where the bad seeds ended up but that doing so would be very difficult.

"They might have shipped over a couple of tons of seeds from Egypt, but it could have just been a small amount of seeds that were contaminated," explained Stephen Smith, a microbiologist at Trinity College in Dublin. "And then some of that shipment goes to Germany, France, and maybe lots of other countries."

Smith said it was likely only a small batch of the seeds were contaminated, which might explain why the new E. coli cases are appearing sporadically.

"We will probably see more cases, but hopefully not on the scale of the German outbreak," he said.

Osterholm said medical authorities should be increasing their surveillance and testing of potential E. coli patients, since cases could easily be missed.

"Once are sold from Egypt, they could be distributed all over the world," he said. "There is no place in the world that's safe from an outbreak like this."


Explore further

E. coli outbreak may be traced to Egypt seeds

©2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Citation: Experts: Seeds tainted by E. coli still out there (2011, June 30) retrieved 23 August 2019 from https://medicalxpress.com/news/2011-06-experts-seeds-tainted-coli.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more