Table 3 Opinion of the veterinary officer that completed the questionnaire concerning the most likely cause of the introduction of the brucellosis infection into the cattle farms
From: Risk factors for new bovine brucellosis infections in Colombian herds
Causes of new infection | % |
|---|---|
Exogenous origin of the new infection | 80 |
Contact with other domestic species | 18 |
Contaminated water/feed sources | 15 |
Introduction of infected animals | 14 |
Admittance of animals that have been in contact with seropositive animals in the originating farm | 10 |
Transhumance/pasture sharing | 8 |
Contact with infected people | 4 |
Contact with wild species | 4 |
Artificial insemination or embryo transfer | 3 |
Movement of animals without official control | 2 |
Endogenous origin of the new infection | 20 |
Recirculation | 8 |
Maintenance of animals diagnosed as positive | 7 |
Absence/deficiency of biosecurity on the farm | 5 |