Table 1.
Distribution of fungal isolates obtained from the water supply system of a paediatric haematopoietic stem cell unit during a 12-month period
| Sampling sites | Number of positive samples/total samples collected (%) | Mould recovered | Total CFU* | Mean (range) concentration CFU/L |
|---|---|---|---|---|
| |
3 (27.4) |
Mycelia sterilia |
4 |
1.3 (1–2) |
| Point where the municipal water supply enters the hospital: |
2 (18.2) |
Penicillium spp. |
10 |
5 (5–5) |
| 11 samples collected |
2 (18.2) |
Cladosporium spp. |
6 |
3 (2–4) |
| |
1 (9.1) |
A. niger sensu lato |
1 |
1 (1–1) |
| |
1 (9.1) |
Trichoderma spp. |
15 |
15 (15–15) |
| |
|
Subtotal |
36 |
|
| |
33 (70.2) |
Penicillium spp. |
398 |
12.1 (1–55) |
| |
28 (59.7) |
Cladosporium spp. |
262 |
9.4 (2–20) |
| |
23 (48.9) |
Mycelia sterilia |
192 |
8.3(1–25) |
| Tanks: |
10 (21.3) |
A. flavus sensu lato |
55 |
5.5 (1–20) |
| 47 samples collected |
6 (12.8) |
A. niger sensu lato |
38 |
6.3(1–15) |
| |
5 (10.6) |
Aureobasidium pullulans |
28 |
5.6 (2–15) |
| |
2 (4.3) |
Fusarium solani complex |
40 |
20 (20–20) |
| |
2 (4.3) |
Trichoderma spp. |
20 |
10 (10–10) |
| |
2 (4.3) |
Chrysonilla sitophila |
13 |
6.5 (3–10) |
| |
2 (4.3) |
Purpureocillium lilacinum |
21 |
10.5 (1–20) |
| |
2 (4.3) |
Rhizopus spp. |
55 |
27.5 (5–50) |
| |
1 (2.1) |
A. deflectus sensu lato |
25 |
25 (25–25) |
| |
1 (2.1) |
A. oryzae sensu lato |
1 |
1 (1–1) |
| |
1 (2.1) |
Aspergillus spp. |
20 |
20 (20–20) |
| |
1 (2.1) |
Mucor spp. |
5 |
5 (5–5) |
| |
|
Subtotal |
1173 |
|
| |
23 (21.7) |
Purpureocillium lilacinum |
563 |
24.5 (2–60) |
| |
15 (14.2) |
Cladosporium spp. |
148 |
9.9 (2–28) |
| |
14 (13.2) |
Fusarium solani complex |
216 |
15.4 (2–80) |
| |
14 (13.2) |
Mycelia sterilia |
94 |
6.7 (2–24) |
| |
9 (8.5) |
Penicillium spp. |
60 |
6.7 (2–24) |
| Tap water from high-risk unit (HSCT): |
6 (5.7) |
A. flavus sensu lato |
18 |
3 (2–8) |
| 106 samples collected |
2 (1.9) |
Aureobasidium pullulans |
44 |
22 (4–40) |
| |
1 (0.9) |
Aspergillus spp. |
4 |
4 (4–4) |
| |
1 (0.9) |
A. sydowii sensu lato |
2 |
2 (2–2) |
| |
1 (0.9) |
Fusarium dimerum complex |
4 |
4 (4–4) |
| |
|
Subtotal |
1153 |
|
| TOTAL | 2362 |
*Total number of CFUs obtained in all positive samples.