BERLIN (Reuters) - Germany's disease control centre reported 365 new E. coli cases on Wednesday as the government scrambled to trace the source of the deadly outbreak. A quarter of the new cases involved the hemolytic-uremic syndrome (HUS), a serious complication resulting from E. coli infection that affects the blood and kidneys, Germany's Robert Koch Institute said. The HUS outbreak, one of the largest of its kind, has been the main contributor to the deaths of some 16 people in north Europe, all of whom had travelled in northern Germany. An 84-year-old woman who died Sunday brought the European toll from the outbreak to 17, all but one in Germany, and hundreds more have fallen sick.