?? Contamination of a neonatal intensive care unit by Aspergillus fumigatus : result of the heatwave

FO Mallaval, C. Paricio, MF Lutz, P. Fascia, C. Fichtner, MP Lavocat, G. Teyssier, P. Berthelot


Since May 2002 of a hospital ?? extensions take place around existing buildings. In this context environmental monitoring of aspergillosis risk was strengthened. Surfaces of levies ?? using ?? dry swabs are made ​​monthly (12 samples / services at risk). From January to August 2003 all samples were negative. In September 75% of samples were positive for Aspergillus fumigatus (AF) in the neonatal intensive care unit (SRNN). Strengthening the bio-cleaning was then performed. Despite this, the control carried out a few days later found 50% of positive samples. Contamination SRNN being broadcast, the ad ?? ventilation initially incriminated. Samples were made ​​on the air ?? d processing plant, the air vents of SRNN and neonatal intensive care unit (SSI) that depend on the same ?? air treatment system. All samples taken on the SRNN vents are positive (10/10). However those made ​​SSI to ?? inside the ventilation duct and at the central air ?? d after filters are negative. The problem was specifically limited to SRNN. An "mycological mapping" service was then performed (123 samples). It has been documented that ?? the month of August 1 ?? door service overlooking a peripheral gallery was open every night with this gallery open window on the outside ?? to create a current of fresh air ?? (T ° 36 ° measured in service to 6 am). The SRNN ?? s probably contaminated at the time (earthworks around the building). ?? The environment results showing high contamination in parts crossed by the current of air ??. The more ?? s distance from these parts as the number of positive samples and the amount of AF ?? decrease. The door to the gallery and windows overlooking the outside ?? were convicted. Cleaning all the service was performed with the blocking ?? entry of new children. During this period a ?? d AF portage screening was performed in newborns. No colonization and / or infection ?? n AF was documented. Since monitoring can not find ?? d AF in the rooms of SRNN.


Full conference title: 

Réunion Interdisciplinaire de Chimiothérapie Anti Infectieuse
    • RICAI 25th (2005)