Skip to main content

Table 2 Occurrence of enteropathogens in untreated and treated wastewater; number of detections grouped according to type of purification system

From: Multiplex polymerase chain reaction detection of enteropathogens in sewage in Norway

Agent Mechanical purification (n = 2) Mechanical, and chemical purification (n = 6) Mechanical, chemical and biological purification (n = 3)
Untreated Treated Untreated Treated Untreated Treated
Campylobacter spp. 0 1 4 1 3 0
Clostridium difficile toxin A/B 0 0 1 0 0 0
Plesiomonas shigelloides 0 0 2 0 2 0
Salmonella spp. 0 1 2 0 0 0
Vibrio spp. 0 0 2 0 0 0
Vibrio cholerae 0 0 1 0 0 0
Yersinia enterocolitica 2 2 6 6 3 2
Enteroaggregative E. coli 2 2 6 4 3 2
Enteropathogenic E. coli 1 1 1 4 0 2
Enterotoxigenic E. coli 0 1 4 2 2 0
Shigatoxin positive E. coli 1 1 5 1 3 0
E. coli O 157 0 0 0 1 1 0
Shigella/Enteroinvasive E. coli coli 1 1 2 1 1 0
Positive samples bacteria 5 10 37 20 15 6
Reduction   46% 60%
Adenovirus F40/41 2 2 6 3 3 1
Astrovirus 0 0 2 0 1 0
Norovirus GI/GII 0 0 2 2 5 1
Rotavirus A 0 0 2 0 5 3
Sapovirus (I, II, IV and V) 1 1 2 1 1 1
Positive samples virus 3 3 14 6 14 5
Reduction   57% 64%
Cryptosporidium spp. 0 0 0 0 1 0
Cyclospora cayetanensis 0 0 0 0 0 0
Entamoeba histolytica 0 0 0 0 1 0
Giardia lamblia 1 1 6 2 3 1
Positive samples protozoa 1 1 6 2 5 1
Reduction   66% 80%
Total positive samples 9 14 57 28 34 12