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
A look at the legislative year ahead as lawmakers return to Washington with a slate of trade concerns to tackle in 2026—from new Chinese tariffs on beef imports to the USMCA review this summer.
Shaun Haney, Host of RealAg Radio on Rural Radio SiriusXM Channel 147, joined us with his 2026 cattle market outlook and insights on beef prices.
The New Year is here, but in Oregon, some ranchers and livestock producers are still trying to recover from record wildfires back in 2024.
As markets anticipate a return to normal trading following the New Year’s holiday, the possibility of the southern border re-opening to cattle is capturing much attention.
Expanding cheese exports are strengthening U.S. milk demand and reinforcing global competitiveness.
U.S. dairy producers remain the primary growth engine globally, while tightening supplies in Europe and New Zealand could support export demand for American dairy products.
Rising production underscores the importance of marketing discipline and margin protection as milk supplies expand.
Jake Charleston of Specialty Risk Insurance shares risk-reduction strategies to help cattle producers prepare for a successful year ahead.
RealAg Radio host Shaun Haney explains why the 2026 USMCA review could directly affect dairy access, produce competition, and export reliability for U.S. farmers and ranchers.

Agriculture Shows
America’s Heartland brings positive, heartfelt stories about American agriculture to viewers in both urban and rural areas.
Hosted by Pam Minick, “The American Rancher” focuses on the people and places that make ranching an American lifestyle. This half-hour magazine format series features livestock producers and their ranches, animals, and ranching practices.
For the latest information on how to take your operation from good to great, tune into Ag PhD. The program includes a wide range of agronomic information from how to maximize your fertilizer program & tiling to stopping those yield-robbing insects and crop diseases and more.
RFD Network is always creating new ways for rural America to educate and to be educated. RURAL AMERICA LIVE, the network’s longest-running self-produced program, is certainly no exception.