
The article reviews the history of New World screwworm in the US, from its spread into the country in the 1950s to the first major Florida infestation in 1957. It describes the heavy costs of treatment, lost production and USDA eradication efforts over more than 70 years.
The ongoing eradication effort adds cost and supply risk for the cattle sector, but the article contains no new market-moving event.
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.