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llosis as calves when four to eight months of age and originating in negative herds in Modified Certifield Areas or in Brucelloss Certified Herds, may^enter without a negative blood test when accompanied by an official vaccination certificate.
3. He’rds which disclosee infection oil an area test must be quarantined on the premises until such time as the herd has passed two .Consecutive negative tests at a 30 to 60 day interval following the removal of reactors. During the quarantine period animals may be
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