A ten -year survey of general hospital corridors fungal aero -contamination : reliable sentinel to predict fungal exposure risk ?

Ref ID: 19474

Author:

AP Bellanger1*, H Gbaguidi-Haore2, F Demonmerot1, K Houdrouge1, E Deconinck3, X Bertrand2,
L Millon1, G Reboux1

Author address:

1Parasitology Mycology, University Hospital J Minjoz, Besancon, France
2Hygiene Hospital, University Hospital J Minjoz, Besancon, France
3Hematology, University Hospital J Minjoz, Besancon, France

Full conference title:

6th Advances Against Aspergillosis 2014

Abstract:

Purpose:
Invasive mould infections (IMI) represent a threat for high-risk patients hospitalized in hematology
units. Fungal aero-contamination controls are performed quarterly, as recommended by the French
guidelines. Since 2002 Besançon university hospital planned several new buildings. Consequently
environmental controls were reinforced weekly.
The aim of our study was to assess retrospectively the contribution of the fungal aero-contamination
measurement in hematology corridors (HC) and main hospital corridors (MC) as sentinel to predict
fungal exposure and IMI risk.
Methods:
2706 air sampling were carried out by impaction every week in the same places in HC and MC
over a ten year period. All fungal species were identified. Hematology departments were alerted
each time that a peak of opportunistic species was detected and corrective action were consequently
planned. Since 2007, each invasive aspergillosis (IA) (based on EORTC/MSG criteria) (n=81) was
signaled to the French health authority. Statistical analysis used Cuzick test, Mann-Kendall trend
test, autocorrelation and Spearmann correlation-rank test.
Results:
In ten years of surveillance, 12 peaks of Aspergillus fumigatus (>40 CFU/m3) were observed in MC
and A. fumigatus contamination was detected up to six times per year in HC. Constant interactions
with the medical staff led to the control of ventilation systems and heating, to an increase of biocleaning
and establishment of instructions to prevent fungal exposure.
Conclusions:
No significant link was observed between A. fumigatus detection and IA diagnosis. Weekly
survey helped to improve the vigilance of the medical teams. Nevertheless 81 cases of IA arose in 69 months.

Abstract Number: 2

Conference Year: 2014

Link to conference website: http://www.AAA2014.org

New link: NULL

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