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Table 4 The Vibrant GPP array's performance evaluation with validated positive specimens

From: Evaluation of the Vibrant DNA microarray for the high-throughput multiplex detection of enteric pathogens in clinical samples

Organism

Comparator (culture or RT-PCR)

Vibrant GPP array

Agreement (95% CI)

Culture isolates

Clinical samples

Culture isolates

Clinical samples

Bacteria

 E. coli O157:H7

2

7

2

7

100 (66.4–100)

 Enteroaggregative E. coli (EAEC)

2

3

2

3

100 (47.8–100)

 Enteropathogenic E. coli (EPEC)

1

4

1

4

100 (47.8–100)

 Enterotoxigenic E. coli (ETEC) lt/st

2

6

2

6

100 (63.1–100)

 Shiga-like toxin producing E. coli (STEC) stx1/stx2

2

9

2

9

100 (71.5–100)

 Plesiomonas shigelloides

1

8

1

8

100 (66.4–100)

 Vibrio parahaemolyticus

1

7

1

7

100 (63.1–100)

 Vibrio vulnificus

1

6

1

6

100 (59.0–100)

 Helicobacter pylori

2

3

2

3

100 (47.8–100)

 Listeria spp.

1

6

1

6

100 (59.0–100)

 Vibrio cholerae

1

3

1

3

100 (39.8–100)

 C. difficile toxin A/B

1

9

1

9

100 (69.2–100)

 Salmonella spp.

3

8

3

8

100 (71.5–100)

 Shigella/Enteroinvasive E. coli (EIEC)

3

5

3

5

100 (63.1–100)

 Yersinia enterocolitica

1

5

1

5

100 (54.1–100)

 Campylobacter jejuni

2

3

2

3

100 (47.8–100)

 Campylobacter upsaliensis

1

3

1

3

100 (39.8–100)

Parasite

 Giardia lamblia

1

3

1

3

100% (39.8–100)

 Cryptosporodium spp.

2

8

2

8

100% (69.2–100)

 Entamoeba histolytica

7

2

7

2

100% (66.4–100)

 Cyclospora cayetanensis

2

4

2

4

100% (54.1–100)

Virus

 Norovirus GI

2

9

2

9

100% (71.5–100)

 Norovirus GII

2

3

2

3

100% (47.8–100)

 Rotavirus A

1

7

1

7

100% (63.1–100)

 Adenovirus F 40/41

1

10

1

10

100% (71.5–100)

 Astrovirus

1

9

1

9

100% (69.2–100)

 Sapovirus (I, II, IV, V)

1

2

1

2

100% (29.2–100)

Fungi

 Candida spp.

1

6

1

6

100% (59.0–100)

 Microsporidium spp.

1

1

1

1

100% (15.8–100)

  1. **P < 0.00001 (Chi square test) for culture versus the Vibrant GPP array