
A long-form feature recounts the history of the New World screwworm, a parasite that once killed millions of dollars of US cattle a year before eradication. It describes the 2016 outbreak that struck deer in the Florida Keys and the eradication program's history.
A screwworm resurgence in US livestock would raise animal health costs and could restrict cattle movements, but the article is historical background with no new outbreak in the US cited.
After 69 past neutral disease events, Live Cattle moved a median -0.1% over 5 sessions (42% higher; middle half -0.8% to +0.6%), and +0.9% 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.