Middlesex-London Health Unit Sampling Of Area Cooling Towers Finds Evidence Of Legionella Bacteria Middlesex-London Health UnitMLHU finds Legionella bacteria linked to outbreak in local cooling towers CTV News LondonOfficials offer new details in London’s deadly legionnaires’ disease outbreak The London Free PressEvidence of legionella bacteria found in 3 London, Ont. cooling towers Global News Toronto1 dead, 6 hospitalized amid legionnaires’ outbreak, health unit says CBC.ca