Epidemiology and management of a bovine brucellosis cluster in Northern Ireland |
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| Authors: | Abernethy D A Moscard-Costello J Dickson E Harwood R Burns K McKillop E McDowell S Pfeiffer D U |
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| Institution: | a Veterinary Epidemiology Unit, Department of Agriculture and Rural Development, Room 921/3, Dundonald House, Newtownards Road, Belfast, Northern Ireland, BT4 3SB, United Kingdom;b Armagh Divisional Veterinary Office, Department of Agriculture and Rural Development, Mall West, Armagh, Northern Ireland, BT61 9BL, United Kingdom;c Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stoney Road, Belfast, Northern Ireland, BT4 3SD, United Kingdom;d Epidemiology Division, Royal Veterinary College, Hawkshead Lane, North Mymms, AL9 7TA, United Kingdom |
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| Abstract: | An epidemiological investigation was undertaken of 41 bovine brucellosis outbreaks that occurred within a 10-month period, in a region where eradication measures appeared to be succeeding. The primary outbreak comprised three herds with significant within-herd spread and a high probability of multiple abortions. Direct contact between cattle at pasture was the most likely means of between-herd transmission for most (71%) outbreaks, with an attack rate of 28.1% in herds immediately neighbouring the primary outbreak herds and 11.3% in the next concentric ring of farms. Resolution of the incident was attributed to a rapid response by the veterinary authorities, detailed epidemiological investigations, repeated, prolonged testing of contact herds and employment of parallel testing. |
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| Keywords: | Brucella abortus Bovine brucellosis Epidemiology Outbreak management |
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