(Salem, OR) -- The Oregon Department of Agriculture has issued new rules for livestock shows to reduce the risk of spreading bird flu. There have been 38 cases of bird flu in poultry in Oregon, but no cases involving cattle. Exhibitions must register with the ODA, keep records of animals for 90 days, have at least one veterinarian consulted in planning the event, and keep influenza-susceptible species separated. Cow milking can't occur in areas accessible to the general public unless there's at least 10 feet of separation. And waterfowl can't swim in pools and must be tested for bird flu.