The World Organisation for Animal Health published an FAQ explaining the new world screwworm, its transmission, symptoms and control measures, including the sterile insect technique. It notes the parasite reduces meat and milk output and can infect humans.
This is background guidance on a livestock pest with no new supply shock in itself, so it has little direct price impact.
After 356 past disease events, Live Cattle moved a median +0.2% over 5 sessions (54% higher; middle half -0.8% to +1.1%), and +1.1% over 20.
After 266 past disease events, Feeder Cattle moved a median +0.5% over 5 sessions (59% higher; middle half -1.1% to +1.7%), and +1.7% 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.