Hanna, you're not quite up to date. The cucumbers were not the cause. It's still not clear what the cause is. It is, however, linked to something located in Hamburg. While the actual cause may still have been a batch of food stuff imported or otherwise (it's not even clear whether vegetables are to blame), it is just as possible that some processing place was the source of the contamination. And right now it is not even established whether the more recent infections are linked directly to dontaminated food or are secondary infections from human to human.

It's not a new strain of E.Coli, it has been encountered before, but never as virulent as now.