Environmental surveillance for legionella in hospital premise plumbing
Date of exam | Inspector | Subject | No. specimen (positive/total) | Type of positive specimen | Culture report (CFU/L) | Temp. (℃) | FRC (mg/L) | Location of positive specimen |
---|---|---|---|---|---|---|---|---|
19.06.25 | PHC | Cooling tower Building 1 |
1/2 4/12 |
Cooling water Hot water |
2,600 400-13,400 |
Washstand, shower in patient’s room | ||
19.07.15 | Self | Building 1 Building 2 Faculty office |
0/10 2/12 1/1 |
Hot water Hot water |
50-100 4,400 |
49.1 58.8 |
<1.0 <1.0 |
Washstand, shower in patients’ room Washstand in faculty office |
19.07.31 | Self | Building 1-2 | 0/15 | |||||
19.08.06-28 | PHC | Building 1 Building 2 Cooling tower |
0/5 0/6 0/2 |
|||||
19.09.10-18 | Self | Building 2 Building 1 |
1/8 1/2 |
Hot water Hot water |
50 150 |
56.7 55.6 |
<1.0 <1.0 |
Washstand in nurses’ station Bedside washstand in MICU |
19.09.25 | Self | Building 2 Building 1 |
0/28 0/6 |
|||||
19.09.30 | PHC | Cooling tower Building 1-2 |
1/2 0/18 |
Cooling water | 8,000 | |||
19.10.21 | Self | Cooling tower Water tank |
1/2 0/1 |
Cooling water | 800 |
*Samples collected from patient’s room where 1st case stayed. †Samples associated with 3rd case.
Abbreviations: CFU, colony forming unit; Temp., temperature; FRC, free residual chlorine; PHC, public health center; MICU, medical intensive care unit.