Nation Legionnaires’ disease reports up more than fivefold since 2000; oversight is lacking February 19, 2019Ken Alltucker, USA TODAYComments Off on Legionnaires’ disease reports up more than fivefold since 2000; oversight is lacking Legionnaires' disease kills one in 10. The legionella pneumophila bacteria can be found in building water systems. Officials say oversight is lacking.