Table 4
Sampling to ensure 50 isolates per food source and 30 isolates from companion animals
Foods
Animals
Chicken
Beef
Lamb
Pork
Dogs
Total
Continually housed
Free range
Offal
Offal
Offal
Offal
Assumed prevalence
0.7
0.7
0.7
0.14
0.6
0.22
0.2
Samples required
72
72
72
286
100
272
150
1041
Positive isolates
50
50
50
40
60
60
30
330