Source of northern Minnesota Legionnaires' outbreak a mystery

Five cases of Legionnaires' disease in Grand Rapids, Minn., have public health officials searching for a common water source at fault. The mysterious outbreak was reported Wednesday by the Minnesota Department of Health, which disclosed that all five people were hospitalized between April and mid-July as a result of their bacterial infections. No further demographic details were provided, other than that the cases involved adults who lived in Grand Rapids or visited the northern Minnesota town within two weeks of their illnesses. Sources of Legionnaires' disease can be tough to...