Isolation and Identification of Staphylococcus aureus from Milk and Milk Products, Associated Factors for Contamination, and Their Antibiogram in Holeta, Central Ethiopia
Table 1
Univariable logistic regression analysis of S. aureus prevalence in different sample types.
Sample type
No. of tested
No. of positive
% prevalence (95% CI)
OR (95% CI)
P value
Raw milk
383
33
8.64 (6.02–11.91)
1 (−)
—
Bulk tank milk at farm
34
5
14.73 (4.95–31.05)
1.82 (0.66–5.03)
0.246
Bulk tank milk at collection centers
13
3
23.08 (5.04–53.81)
3.17 (0.83–12.10)
0.091
Cottage cheese
28
4
14.29 (4.03–32.66)
1.76 (0.57–5.38)
0.320
Curd milk
29
7
24.14 (10.30–43.54)
3.36 (1.34–8.46)
0.010
Overall
486
52
10.69 (8.09–13.79)
No. = number, CI = confidence interval, OR = odd ratio, chi-square (X2) = 0.21, and P value = 0.037.