Table 1. Groups of strains studied for which statistical comparisons of repeat content and pathogenicity were performed.
All strains (N = 126) | Strains with intact I-E genes (N = 71) | ||||||
---|---|---|---|---|---|---|---|
Comparison | Group of strains compared | No. of strains | Median repeat no. | Repeat no. range | No. of strains | Median repeat no. | Repeat no. range |
A | 1. Commensal | 28 | 29.5 | 0–53 | 22 | 38.0 | 6–53 |
2. Pathogenic | 98 | 12 | 0–42 | 49 | 21.0 | 5–42 | |
B | 1. Commensal | 28 | 29.5 | 0–53 | 22 | 38.0 | 6–53 |
2. EnPEC | 50 | 18 | 0–42 | 35 | 23.0 | 11–42 | |
3. ExPEC | 43 | 2 | 0–29 | 11 | 19.0 | 5–29 | |
C | 1. EIEC | 9 | 10 | 3–42 | 3 | 24.0 | 15–42 |
2. EPEC | 10 | 14 | 0–33 | 6 | 17.5 | 9–33 | |
3. ETEC | 5 | 23 | 12–40 | 4 | 26.0 | 22–40 | |
4. EHEC | 17 | 21 | 6–35 | 16 | 25.0 | 7–35 | |
D | 1. EnPEC (ECOR) | 41 | 13 | 0–42 | 23 | 25.0 | 2–42 |
2. EnPEC (non-ECOR) | 31 | 14 | 0–40 | 18 | 19.0 | 2–40 | |
E | 1. n = 0 UPEC genes a | 63 | 21 | 0–53 | 49 | 26 | 6–53 |
2. n = 1 UPEC genes a | 23 | 13 | 0–29 | 12 | 20.5 | 7–29 | |
3. n = 2 UPEC genes a | 22 | 2 | 0–31 | 9 | 19 | 14–31 | |
4. n = 3 UPEC genes a | 7 | 2 | 1–5 | 1 | 5 | - | |
5. n = 4 UPEC genes a | 11 | 2 | 0–2 | 0 | - | - |
aStrains with the same total number of UPEC factors considered in the study.