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Table 3 Occurrence of enteropathogens in untreated sewage; number of positive samples grouped according to treatment facility size (n = number of plants sampled)

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

Agent 2000–10,000 inhabitants (n = 3) 10,000–25,000 inhabitants (n = 3) > 25,000 inhabitants (n = 3)
Campylobacter spp. 2 3 2
Clostridium difficile toxin A/B 1 0 0
Plesiomonas shigelloides 1 1 2
Salmonella spp. 1 1 0
Vibrio spp. 0 1 1
Vibrio cholerae 0 1 0
Yersinia enterocolitica 3 3 3
Enteroaggregative E. coli 3 3 3
Enteropathogenic E. coli 3 2 1
Enterotoxigenic E. coli 1 2 3
Shigatoxin positive E. coli 2 3 3
E. coli O 157 0 1 0
Shigella/Enteroinvasive E. coli colicoli 0 1 2
Adenovirus F40/41 3 3 3
Astrovirus 0 0 2
Norovirus GI/GII 1 3 2
Rotavirus A 2 2 3
Sapovirus 1 1 3
Cryptosporidium spp. 0 1 0
Cyclospora cayetanensis 0 0 0
Entamoeba histolytica 0 0 1
Giardia lamblia 3 3 3
Total 28 36 37