Risk factor | Definition |
---|---|
Agricultural characteristics | |
Ruminant density per km2 | Density of ruminants (goats, sheep, dairy cattle or beef cattle) per km2 of populated area. |
Poultry density per km2 | Density of poultry (hens, broilers, or turkeys) per km2 of populated area. |
Slaughterhouse | Presence of ≥ 1 slaughterhouse handling poultry, cattle, and/or pigs under governmental inspection. |
Demographic variables | |
Diploma (%) | Percentage of people >15 years with a grade, certificate, or diploma. |
Population density per km2 | Total number of people living in the area out of the total area in km2. |
Climate variables | |
Precipitation (mm) | Average of daily precipitation for the study period. |
Temperature (°C ) | Average of the maximal and minimal daily temperature for the study period. |