Germany's national disease control center says the number of new cases of E. coli illness being reported has slowed to a trickle.

The Robert Koch Institute said Tuesday that a total of 3,235 people in Germany have been reported ill, only seven more than the previous day.

A total of 36 people — 35 in Germany and one in Sweden — have died in what has been the deadliest outbreak of E. coli ever.

German authorities have narrowed the source of the outbreak to vegetable sprouts from a farm in the north of the country.

They are warning consumers against eating any vegetable sprouts until they determine whether the farm received tainted seeds — meaning other farms could also be affected — or whether the cause was a hygienic problem at the farm itself.