Figure 1
Distribution of risks of HPAI for 23,174 evaluations at the farm level in association with 544 “outbreak” farms from January 2014 to April 2017, predicted by the selected multilayer perceptron model: Comparison by outbreak status of receiver farms.
HPAI = highly pathogenic avian influenza.
Figure 2Recall and precision of the risk predicted by the assessment model, according to a series of cut-off values.
Figure 3Positive likelihood ratio and posterior probability estimated using risk predicted by the risk assessment model.
Table 1Visit records and dangerous contacts generated by livestock-related vehicles during the epidemics of HPAI in Korea from 2014 to 2017.
Category of use for the vehicle |
Total visit records |
Dangerous contacts |
|
|
No. of vehicles |
No. of visits |
No. of vehicles |
No. of visits |
Attack rate (%) by vehicles |
|
25th
|
50th
|
75th
|
Feed |
11,096 |
22,230 |
173 |
1,571 |
8.7 |
14.3 |
27.3 |
|
Live animal |
9,110 |
12,464 |
140 |
590 |
6.7 |
10.5 |
22.4 |
|
Egg |
916 |
2,549 |
61 |
446 |
33.3 |
50.0 |
66.7 |
|
Husk |
976 |
1,727 |
29 |
209 |
16.7 |
25.0 |
40.0 |
|
Consultant |
914 |
1,382 |
14 |
79 |
16.9 |
28.9 |
38.3 |
|
Veterinary pharmaceuticals |
740 |
1,186 |
6 |
35 |
6.6 |
10.8 |
12.3 |
|
Livestock compost |
343 |
984 |
10 |
159 |
18.6 |
50.0 |
72.9 |
|
Manure |
280 |
731 |
4 |
105 |
21.3 |
29.2 |
47.9 |
|
Veterinarian |
434 |
636 |
4 |
13 |
12.7 |
17.5 |
20.6 |
|
Others |
9,534 |
14,137 |
1*
|
1 |
- |
9.1 |
- |
|
Total |
34,343 |
58,026 |
442 |
3,208 |
9.1 |
17.2 |
36.4 |