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Table 2 Environmental findings from the workplace of Case B, plant B and mill B

From: Two Legionnaires' disease cases associated with industrial waste water treatment plants: a case report

Date (before or after infection) Water systems sampled (sample type) Temperature (°C) Legionella concentration (cfu/l) Type of Legionella
16 th Aug 2005 (before) Active sludge basin at the waste water treatment plant B (water) 37.7 3.0 × 107 L. pneumophila serogroup 5
15 th Nov 2006 (after) Active sludge basin at the waste water treatment plant B (water) 35.2 4.3 × 107 and 8.0 × 109 L. pneumophila serogroup 5 and L. rubrilucens
15 th Nov 2006 (after) Cooling tower at the waste water treatment plant B (water) 37.3 1.7 × 103 L. pneumophila serogroup 2
15 th Nov 2006 (after) Well of rejected waste water at plant B (water) 31.0 3.2 × 107 and 2.0 × 108 L. pneumophila serogroup 5 and L. rubrilucens
15 th Nov 2006 (after) Process water, paper machine X, mill B (water) 50.0 Not detected  
15 th Nov 2006 (after) Process water, paper machines X and Y, mill B (water) 35.1 Not detected  
15 th Nov 2006 (after) Shower water system in mill B, used by Case B (water) 35.0 Not detected