By R. Robinson

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Extra info for Guidelines for Coordinated Human and Animal Brucellosis Surveillance (Fao Plant Production and Protection Paper, 156)

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Suis as in Phase 1. 4. Freedom phase The OIE International Animal Health Code does not prescribe conditions for country freedom for swine brucellosis, but a number of countries are free or are in the process of attaining freedom. Guidelines for coordinated human and animal brucellosis surveillance 33 On-farm testing OIE defines a herd as free from porcine brucellosis if it can satisfy the following requirements: (i) (ii) Be under official veterinary control. Contain no animal found to be infected with porcine brucellosis during the past three years and all suspected cases are subjected to laboratory investigation.

Testing after movement and quarantine. Testing areas adjacent to borders where illegal introductions may occur. Testing imported animals of breeding age. Testing imported semen, embryos and ova. Finally, there have been a number of instances recorded where a human case or outbreak of brucellosis has lead to a trace-back to an infected herd in a region hitherto considered free of brucellosis. 2, on Identification, Serological and other Tests, Vaccines and Diagnostic Biologicals, in OIE Manual of Standards for Diagnostic Tests and Vaccines (2000).

Off-farm surveillance as in Phase I. It could be that vaccines have demonstrated good efficacy, but they have never been used extensively in swine. 3. Test and removal, segregation or slaughter phase Because none of the existing serological tests are reliable in individual pigs, buffered Brucella antigen tests (including the Card Test) are used to diagnose herd infections. Nevertheless, some countries do attempt herd eradication by testing all eligible animals (usually >6 months of age) every 30 days, and remove reactors for slaughter, continuing until the entire swine herd is negative.

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