Prevalence and Antimicrobial Susceptibility Pattern of E. coli O157:H7 Isolated from Traditionally Marketed Raw Cow Milk in and around Asosa Town, Western Ethiopia
Table 1
Prevalence of E. coli in the study samples in different conditions.
Tested samples
Presence of E. coli
Presence of E. coli O157:H7
Negative
Positive
Negative
Positive
Farm
178 (46.8%)
128 (71.9%)
50 (28.1%)
177 (99.4%)
1 (0.6%)
Vendor
202 (53.2%)
123 (60.9%)
79 (39.1%)
192 (95.0%)
10 (5%)
5.12
6.48
value
0.02
0.01
Good
150 (39.5%)
112 (74.7%)
38 (25.3%)
149 (99.3%)
1 (0.7%)
Poor
230 (60.5%)
139 (60.4%)
91 (39.6%)
220 (95.7%)
10 (4.3%)
8.20
4.38
value
0.004
0.04
Plastic
234 (66.2%)
154 (60.6%)
100 (39.4%)
245 (96.5%)
9 (3.5%)
Steel
126 (33.2%)
97 (77.0%)
29 (23.0%)
124 (98.4%)
2 (1.6%)
10.05
1.15
value
0.002
0.28
<1 hour
197 (51.8%)
136 (69.0%)
61 (31.0%)
195 (99%)
2 (1%)
1–4 hours
96 (25.3%)
43 (44.8%)
26 (27.1%)
93 (96.9%)
3 (3.1%)
>4 hours
87 (22.9%)
45 (51.7%)
42 (48.3%)
81 (93.1%)
6 (6.9%)
13.2
4.81
value
0.001
0.09
Total
380 (100%)
251 (66.1%)
129 (33.9%)
369 (97.1%)
11 (2.9%)
Milk containers are usually cleaned properly before and after milking using quality water with help of detergent and using of containers made of stainless steel. The condition that does not fulfill or partially fulfill the first case. Samples collected from raw cow milk held in containers made of plastic. Samples collected from raw cow milk held in container made of stainless steel.