Source Database Summary
Table 1. E. coli isolates correctly classified into thirteen source groups using the fluorophore-enhanced DNA fingerprinting (HFERP) method.
| Source group | Individuals | Number of DNA Fingerprints |
| Cat | 37 | 48 |
| Chicken | 86 | 144 |
| Cow | 115 | 189 |
| Deer | 64 | 96 |
| Dog | 71 | 106 |
| Duck | 42 | 81 |
| Goat | 36 | 42 |
| Goose | 73 | 135 |
| Horse | 44 | 78 |
| Human | 197 | 210 |
| Pig | 111 | 215 |
| Sheep | 37 | 61 |
| Turkey | 69 | 126 |
| Overall | 982 | 1531 |
Table 2. Total and unique E. coli isolates correctly classified into source groups by rep-PCR and HFERP DNA fingerprinting methodsa.
| Source group |
All Fingerprints (n=2,466) |
Unique Fingerprints (n=1,535) |
| Percent Correctly Classifieda |
Percent Correctly Classified |
| rep-PCR |
rep-PCR |
HFERP |
| Pearson |
Pearson |
Jaccard |
Pearson |
Jaccard |
| Petb |
91.8 (279)d |
61.7 (95)d |
45.5 (70) |
59.1 (91) |
44.8 (69) |
| Chicken |
81.4 (188) |
59.7 (86) |
38.9 (56) |
63.2 (91) |
31.9 (46) |
| Cow |
79.6 (238) |
55.0 (104) |
47.6 (90) |
62.0 (117) |
48.2 (91) |
| Deer |
85.5 (145) |
55.2 (53) |
36.5 (35) |
62.2 (60) |
42.6 (41) |
| Waterfowlc |
81.4 (262) |
66.2 (150) |
52.8 (114) |
70.4 (152) |
56.5 (122) |
| Goat |
97.1 (101) |
66.7 (27) |
59.5 (25) |
47.6 (20) |
42.9 (18) |
| Horse |
69.3 (79) |
44.3 (35) |
34.2(27) |
52.6 (41) |
32.1 (25) |
| Human |
78.3 (240) |
59.2 (124) |
47.4(100) |
53.8 (113) |
45.2 (95) |
| Pig |
77.9 (236) |
63.7 (137) |
43.7 (94) |
54.4 (117) |
36.3 (78) |
| Sheep |
79.0 (80) |
7.5 (29) |
39.3 (24) |
37.7 (23) |
8.2 (5) |
| Turkey |
88.6 (179) |
73.8 (93) |
52.4 (66) |
73.0 (92) |
54.8 (69) |
| Overall |
82.2 (2,027) |
60.9 (933) |
45.8 (701) |
59.9 (917) |
43.0 (659) |
aBased on Jackknife analysis with 1% optimization and maximum similarities using curve-based (Pearson's product moment correlation coefficient) or band-based (Jaccard's coefficient) similarity calculations.
bPet group consists of cats and dogs.
cWaterfowl group consists of ducks and geese.
dValues in parentheses are number of isolates correctly classified.
|
