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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