E. coli puts spotlight on food chain complexity

The deadly E. coli strain which has never been seen in an outbreak before continues to baffle officials.

In Germany hundreds of tests have been carried out, but they can't pinpoint the cause. The authorities are still recommending that raw salad vegetables should not be eaten.

The facts are that nearly 2,000 people have been infected. All but two of the cases involve people who reside in or had recently visited northern Germany. Some scientists suggest that most probably the source of the outbreak is in Germany and that food from elsewhere is safe. But they can't be certain. That is reflected in official comments coming out of Germany.

BBC News - E. coli puts spotlight on food chain complexity