New Tool in the Bag: FDA approves new drug to fight New World Screwworm

panning-across-herd-of-running-cows-SBI-350106187 (1).jpg

Photo via Storyblocks

The FDA is one step closer to approving a treatment for the parasite, New World Screwworm, in cattle.

FDA Commissioner Dr. Marty Makary says the Administration has conditionally approved a drug to treat it. It is called “Dectomax,” and it already has full approval to treat other parasites in cattle and swine. The drug also comes with a warning to prevent drug residues in meat.

In a post on social media, Agriculture Secretary Brooke Rollins called it a victory for our farmers and ranchers and said more good news is coming.

The approval comes just weeks after New World Screwworm was found 70 miles south of the U.S. border, which is the closest detection since the outbreak began. The southern border does remain closed to cattle movement, with no clear timeline for that reopening.

Related Stories
Singer-songwriter and RanchHER Clare Dunn reflects on the importance of National FFA Week, her time in FFA, and her commitment to advocating for agriculture and rural issues.
Border closures tied to the threat of New World Screwworm continue to stall Mexican fed cattle imports, tightening U.S. feeder cattle supplies over time — triggering feedlot closures that hinder herd rebuilding efforts, threaten the beef supply chain, and shrink production while consumer prices stay elevated.
Ranger Road Fire has burned 283,000 acres across Kansas and the Oklahoma Panhandle and is nearing containment, as ranchers begin assessing cattle and infrastructure losses as they look toward recovery.
Domestic beef demand remains solid, with the strongest growth occurring through retail channels, according to consumers surveyed in the latest K-State Meat Demand Monitor.
The long-term viability of a ranching operation often hinges on how effectively its owners navigate the overlapping layers of IRS regulations, state tax incentives, and USDA disaster programs.
Fed cattle numbers are down two percent in February, according to the latest USDA report. Marketings fell 13 percent, signaling continued pressure on beef prices in 2026.

LATEST STORIES BY THIS AUTHOR:

EPA Administrator Lee Zeldin, in consultation with the U.S. Department of Energy and under the Clean Air Act, approved the temporary measure to help stabilize fuel supplies and reduce costs for consumers.
AFBF Women’s Leadership Committee Chair Isabella Chism joined us to discuss Ag Day planning, community involvement, and supporting the future of agriculture.
EPA Administrator Scott Mason shares updates on farm equipment regulations, regional accomplishments, and federal efforts supporting agriculture in honor of National Ag Day.
Sen. Roger Marshall joins us in honor of National Ag Day to share legislative updates, highlight key policy victories, and initiatives supporting farmers and rural communities he is championing in Washington.
Carol Anderson joined us to highlight the importance of rural mental health, introduce a new resilience program, and share resources available to the ag community.
During opening remarks, Rollins emphasized the strength and perseverance of the agricultural community, while teasing that a new policy announcement is expected later this week.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.