Potential hospital-associated clusters detected using WHONET-SaTScan automated system, 2002–2006.

aNumber of days from the first culture associated with the cluster and the date of the first alert.bNumber of days between the first and the last alert for a cluster.cReflects the frequency (d) in which such as cluster is expected to occur by chance alone. Only clusters meeting a threshold recurrence interval of ≥365 d are provided.d–eIndicates same cluster identified by more than one signal type.N, no; Y, yes.