A fluorescent in situ hybridization based assay was used to enumerate viable Enterobacteriaceae members in seawaters by solid phase cytometry. The method was specific, highly sensitive (1cell/100ml) and allowed the quantification of VNC Enterobacteriaceae cells during an osmotic stress. Investigations on contaminated coastal seawater revealed a strong correlation between Enterobacteriaceae counts and standard fecal indicators.
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