Scientists in Germany investigating the deadly E.coli food poisoning outbreak are still working on the possibility that it originated from several sources.
They are taking another look at a farm in the north of the country after learning that three beansprout packers fell ill last month. But so far no traces of the germ have been found there.
Investigators also found the deadly strain in eastern Germany, on a cucumber found in the bin of a family who had fallen ill.
But in neither case can scientists determine if the food infected the people, or the people infected the food.
Health authorities in Hamburg say their budgets are being strained and have called for more blood donations. In all 27 people have died and 2,700 have been infected, the lion’s share being in northern Germany.
The E.coli scare has rattled public confidence, but that has proved a boost for the makers of disinfectants.
One company that makes hospital-grade antiseptic hand-washing products said orders have ballooned. It is now selling five-times the quantity that it did before the food-poisoning outbreak.