Table 2 Frequency distribution of STEC serovars and drug resistance traits in samples collected from cattle and humans in this study
Serovar | Foods of cattle origin | Diarrheic cases | Total N = 400 | ||||
|---|---|---|---|---|---|---|---|
Milk N = 100 | Beef N = 100 | Subtotal N = 200 | Cattle N = 100 | Humans N = 100 | Subtotal N = 200 | ||
O26:H11 | 3 (3) | 2 (2) | 5 (2.5) | 9 (9) | 4 (4) | 13 (6.5) | 18 (4.5) |
O111:H2 | 0 (0) | 2 (2) | 2 (1) | 0 (0) | 4 (4) | 4 (2) | 6 (1.5) |
O91:H21 | 2 (2) | 0 (0) | 2 (1) | 1 (1) | 1 (1) | 2 (1) | 4 (1) |
O128:H2 | 0 (0) | 3 (3) | 3 (1.5) | 1 (1) | 0 (0) | 1 (0.5) | 4 (1) |
O103:H2 | 1 (1) | 0 (0) | 1 (0.5) | 0 (0) | 1 (1) | 1 (0.5) | 2 (0.5) |
O113:H4 | 0 (0) | 0 (0) | 0 (0) | 1 (1) | 0 (0) | 1 (0.5) | 1 (0.3) |
Total STEC | 6 (6) | 7 (7) | 13 (6.5) | 12 (12) | 10 (10) | 22 (11) | 35 (8.8) |
CR-STEC | 1 (1) | 0 (0) | 1 (0.5) | 2 (2) | 4 (4) | 6 (3) | 7 (1.8) |
ESBL-STEC | 2 (2) | 1 (1) | 3 (1.5) | 7 (7) | 7 (7) | 14 (7) | 17 (4.3) |
MDR-STEC | 2 (2) | 1 (1) | 3 (1.5) | 8 (8) | 7 (7) | 15 (7.5) | 18 (4.5) |