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Table 3 Results of microbiological analysis from the hospital's hot water samples one day and one month after hyperchlorination

From: Legionella pneumophila serogroup 3 pneumonia in a patient with low-grade 4 non-Hodgkin lymphoma: a case report

Legionella pneumophila load, CFU/L
Sampling site Sampling mode Before treatment One day after treatment One month after treatment
Boiler Pre-flushing 5 × 103 1.5 × 102 3.5 × 103
  Post-flushing 4.5 × 103 2 × 102 5 × 103
Room closest to the boiler (sink) Pre-flushing 6.5 × 103 4 × 102 8.5 × 103
  Post- flushing 7 × 103 2.5 × 103 6 × 103
Room farthest
from the boiler (sink)
Pre-flushing 4 × 103 2.5 × 101 2.5 × 103
  Post-flushing 5 × 102 1.5 × 102 3.5 × 102
Patient's room from
first admission (sink)
Pre-flushing 4 × 103 2 × 102 2.5 × 103
  Post-flushing 4.5 × 103 4 × 102 3 × 103
  1. CFU/L: colony-forming units per liter.