The institute adds the latest figures indicate that the number of new cases is declining -- a sign that the epidemic that might have reached its peak. But it cautions that it is not certain whether the latest decrease will continue in the coming days.
It said the number of people suffering from a serious complication that may lead to kidney failure among those sickened rose by 12 to 642.
The outbreak has killed a total of 22 people across Europe within a month.