More Cases of New World Screwworm Detected Within 200 Miles of U.S. Border

New World Screwworm cases in Mexico, including one within 200 miles of the U.S. border, are adding pressure to livestock markets and trade decisions.

screw worm again 1280.jpg

Market Day Report

MEXICO CITY (RFD-TV) — New World Screwworm remains isolated in Mexico, but it is closer to the U.S. southern border than ever before. The first new case was in a calf located less than 200 miles from the U.S. border, marking the parasite’s closest approach to America. The second case was reported the following day in a goat near Mexico City.

Rich Nelson, chief strategist with Allendale, Inc., told RFD-TV News that the markets are closely watching that action this week.

“We’re watching those two updates from last week where USDA did confirm this discussion about two new cases of screwworm in Mexico,” Nelson said. “One of those cases was within 200 miles of the border. So as far as it stands, starting out this week, a little premium is still being added from that screwworm concern -- and the confirmation that we will not be raising that or opening that Mexican border.”

Authorities report more than 13,000 cases of New World Screwworm in Mexico since late 2024.

Related Stories
The report shows that, despite production challenges, dairy farmers are producing more milk with fewer resources per gallon across the industry.
Producers across the country balanced winter weather disruptions, shifting export demand, and tightening margins as year-end decisions come into focus.
Reviewing risk management now can help dairy and livestock producers enter 2026 with clearer margins and fewer surprises.
The National Cattlemen’s Beef Association (NCBA) and Public Lands Council (PLC) are praising the passage of a bill to delist gray wolves as an endangered species by the U.S. House last week.
Recent USDA export sales data show China has been active in the U.S. market, but analysts tell RFD-TV News that the timing is a key clue.
In Minnesota, a legal and legislative battle has reached a tipping point. For over a decade, the state’s Department of Natural Resources (DNR) and the private deer-farming industry have been locked in a dispute over the management of Chronic Wasting Disease (CWD).
Tight feeder supplies and lower placements indicate continued support for the cattle market, with regional impacts heightened in Texas by reduced feeder imports.
Cattle markets are watching the Cattle-on-Feed Report for signs of tighter supplies, while USMEF warns limited China access is cutting producer profits.
Lower milk prices may pressure margins, but strong cattle values could soften near-term financial impacts.

Agriculture Shows
From the rapid technological advances in the business of farming to the policy that helps shape the industry, growers get unparalleled perspective from these guys. Max Armstrong, Mike Pearson and Greg Soulje: the names producers have long known and trusted for agriculture news, weather, and commentary.
Watch Rural Evening News to catch up on that day’s news surrounding agriculture and markets from across the world. Along with market news, our news staff will bring you news stories covering topics including auctions, cattle, farm equipment, ranch, real estate, and much more!
Every day, “Market Day Report” delivers “live” coverage of agri-business news, weather, and commodity market information from across the world. Our market coverage is constantly updated every half-hour, bringing you the latest on the markets.
Farm Monitor shines a light on Southeastern agriculture and is the only weekly news and information program dedicated to Georgia’s largest and most important industry: agriculture.
Check out FFA Today, a fun and fast-paced show featuring fascinating stories about amazing kids and unique agriculture industries.