Table 2 Risk factors in farm level, standardized methods, and relative importance of each factor
Factors | Very low (1) | Low (2) | Medium (3) | High (4) | Very high (5) | Weight |
|---|---|---|---|---|---|---|
Certified standard farm | Yes | Â | Submitted but not certified | Â | Not certified | 0.05652 |
Type of pig house | Close (evaporation) | Close (wind tunnel) | Open (net) | Â | Open (no net) | 0.22995 |
Flying fox bat (s) found in farm area | Never | Â | A bat flying through | A bat eating in farm | A bat roosting in farm | 0.13653 |
Frequency of flying fox bat (s) found in farm area | Never | Seldom (<12 times per year) | Occasionally (at least a time per month) | Often (> 2 times per week) | Always (almost every day) | 0.13653 |
Presence of fruit trees in farm | No |  | < 20 trees |  | >20 trees | 0.06654 |
Number of fruit trees less than 15 m. away from the pig house | No |  |  | <5 trees | >5 trees | 0.10251 |
Presence of high trees in farm | No | <20 trees | Â | >20 trees | Â | 0.03272 |
Number of high trees being less than 15 m. away from pig house | No |  | <5 trees | >5 trees |  | 0.06367 |
Type of other animals in farm | No | Others | Cow/horse/goat | Dog/cat | Rodent | 0.02538 |
Presence of fence surrounding farm | Yes | Â | Â | No | Â | 0.02643 |
Quarantine of at least 14 days before introduction of new pig | Yes |  |  | No |  | 0.02643 |
Spatial suitability of NiV transmission where this pig farm is located | Very low | Low | Medium | High | Very high | 0.09678 |