Factor | Number of reports | Epidemic or endemic? | Geographic data coverage available? |
---|---|---|---|
Climatic factors: | Â | Â | Â |
   Higher rain than normal/floods | 17 | Epidemic | Indirectly |
   Annual rainfall | 10 | Both | Yes |
   Vegetation/NDVI | 6 | Both | Yes |
   Length and timing of rain | 4 | Epidemic | Indirectly |
   Temperature | 3 | Both | Yes |
Hydrological factors: | Â | Â | Â |
   Proximity to lake/dam | 6 | Both | Yes |
   Irrigation | 6 | Both | No |
   Dambos/accumulated water | 5 | Epidemic | Indirectly |
   Proximity to river | 3 | Both | Yes |
Topographic factors: | Â | Â | Â |
   Land-cover type | 4 | Both | Yes |
   Low-lying elevation | 3 | Both | Yes |
   Ecological zone | 3 | Both | Yes |
Host and vector factors: | Â | Â | Â |
   Human factors | 10 | Epidemic | No |
   Vector abundance | 7 | Both | No |
   Importing infected animals | 6 | Epidemic | No |
   Moving livestock to endemic focus | 4 | Epidemic | No |
   Breed and other livestock factors | 4 | Both | No |
   Sheep present | 2 | Epidemic | Indirectly |
   Livestock density | 1 | Both | Yes |
   Natural hosts/small mammals | 1 | Both | No |