Fig. 4From: Sanitary installations and wastewater plumbing as reservoir for the long-term circulation and transmission of carbapenemase producing Citrobacter freundii clones in a hospital settingRoom occupation and CPE status of patients belonging to the ST22-cluster (ClusterA) over time P = group of wastewater pipes (P01 collects rooms R01 to R09; P03 collects rooms R10 to R16), R = patient room number. Two lanes per patient, the first lane (blocks) visualises the room(s) occupied, the second lane (circles) summarises CPE status over time. Patients are grouped according to the room number of first CPE detection. Wastewater drainage system is schematically represented in the legend (identical for both grey water as black water) Back to article page