Research Article

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
NegativePositiveNegativePositive

Farm178 (46.8%)128 (71.9%)50 (28.1%)177 (99.4%)1 (0.6%)
Vendor202 (53.2%)123 (60.9%)79 (39.1%)192 (95.0%)10 (5%)
5.126.48
value0.020.01
Good150 (39.5%)112 (74.7%)38 (25.3%)149 (99.3%)1 (0.7%)
Poor230 (60.5%)139 (60.4%)91 (39.6%)220 (95.7%)10 (4.3%)
8.204.38
value0.0040.04
Plastic234 (66.2%)154 (60.6%)100 (39.4%)245 (96.5%)9 (3.5%)
Steel126 (33.2%)97 (77.0%)29 (23.0%)124 (98.4%)2 (1.6%)
10.051.15
value0.0020.28
<1 hour197 (51.8%)136 (69.0%)61 (31.0%)195 (99%)2 (1%)
1–4 hours96 (25.3%)43 (44.8%)26 (27.1%)93 (96.9%)3 (3.1%)
>4 hours87 (22.9%)45 (51.7%)42 (48.3%)81 (93.1%)6 (6.9%)
13.24.81
value0.0010.09

Total380 (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.