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Table 1 Distribution of fungal isolates obtained from the water supply system of a paediatric haematopoietic stem cell unit during a 12-month period

From: The water supply system as a potential source of fungal infection in paediatric haematopoietic stem cell units

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  
  1. *Total number of CFUs obtained in all positive samples.