Oregon Revised Statutes Food and Other Commodities: Purity, Sanitation, Grades, Standards, Labels, Weights and Measures § 621.117

A distributor, producer-distributor or dairy products plant licensee shall not sell or offer or expose for sale any dairy product or fluid milk for human consumption unless the milk used in the dairy product or fluid milk has been pasteurized or is goat or sheep's milk that was produced by a disease-free herd, except that if not more than one reactor animal appears when the goat or sheep herd is tested for brucellosis, the milk, dairy products or fluid milk may still be sold if the animal is slaughtered and no additional reactor animals appear when the herd is retested, as provided in ORS chapter 596 and regulations promulgated thereunder. If one or more reactor animals appear when the herd is retested, no milk, dairy products or fluid milk from the herd may be sold until the herd regains a brucellosis-free status.