Table 1 Specificity and sensitivity of the human- and pig-associated DNA markers.

From: Evaluation of five microbial and four mitochondrial DNA markers for tracking human and pig fecal pollution in freshwater

Sample source

No. of samples

No. of samples positive

AllBac

Human-associated markers

Pig-associated markers

BacH

HF183

B.adolescentis

H-ND6

H-ND5

Pig-2-Bac

L.amylovorus

P-CytB

P-ND5

Human

25

25

23

21

21

25

25

0

4

13

5

Pig

25

25

6

2

20

1

1

25

24

25

25

Bovine

8

8

1

0

2

0

0

0

0

4

2

Goat

10

10

5

5

5

0

0

0

0

6

3

Dog

8

8

6

2

2

0

0

0

0

8

6

Chicken

18

18

10

2

4

0

1

0

9

0

0

Duck

18

18

6

1

8

0

0

0

6

1

0

Goose

12

12

3

0

5

0

0

0

5

1

0

Cormorant

8

8

4

0

0

0

0

0

0

1

1

Total No. of samples

132

          

No. of false positive samples

  

41

12

46

1

2

0

24

34

17

Specificity

  

61.7%

88.8%

57.0%

99.1%

98.1%

100%

74.8%

68.2%

84.1%

Sensitivity

  

92.0%

84.0%

84.0%

100%

100%

100%

96%

100%

100%