Iran's Veterinary Organization reported sharp declines in infected avian flu farms, with 17 infected in the month ending Nov. 21 versus 104 a year earlier.
Officials have imported 30 million vaccine doses and decentralised production hubs to limit spread of the H5N8 strain.
Improving control of avian flu supports Iranian poultry output and feed demand, a small factor for global grain and meal prices.
After 145 past neutral disease events, Corn moved a median +0.4% over 5 sessions (58% higher; middle half -1.2% to +1.7%), and +0.0% over 20.
After 98 past neutral disease events, Soybean Meal moved a median -0.2% over 5 sessions (44% higher; middle half -1.9% to +1.5%), and -0.4% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.