1. New World Screwworm cases continue to rise [TX]
JamBroadcasting.com
June 12, 2026
U.S. Secretary of Agriculture Brooke Collins announced in a Thursday news conference that the total number of New World Screwworm cases has risen to eight since last week's breakout. Authorities have implemented quarantines in 10 counties, including Gillespie, Kerr and Kimble counties, and are releasing sterile flies to halt the spread.
On the ground, containment efforts include livestock inspection checkpoints operated by representatives of the Texas Animal Health Commission. One such checkpoint is located along Harper Road north of Interstate 10 and is focused on monitoring livestock being transported out of Gillespie County.
State officials noted there are now nine confirmed cases of New World Screwworm across four Texas counties, with most involving domestic cattle.
Edwards - 1 cattle, 1goat; Gillespie - 1 goat; La Salle - 2 cattle; Zavala - 3 cattle. Added June 12: Tom Green -1 cattle (Coke Co. in the surveillance zone)
Full text: https://jambroadcasting.com/new-world-screwworm-cases-continue-to-rise/
Moving or selling livestock into West Virginia? Screwworm spread causes state to institute precautions
By Anthony Panasiewicz
TriStateAlert.com
June 12, 2026
BERKELEY COUNTY- Even though it was largely eradicated in North America decades ago, flies and larvae of the New World Screwworm are proliferating throughout the United States. As such, many states are cracking down on livestock that are spreading the affliction.
The West Virginia Department of Agriculture has issued a special movement notice establishing additional interstate movement requirements for warm-blooded animals entering West Virginia from areas impacted by New World Screwworm.
Under the order:
All warm-blooded animals entering West Virginia from an identified New World Screwworm infested zone (NWS Confirmed Detections) must comply with national continuity of business movement guidance and obtain an entry permit from WVDA at least 48 hours prior to movement.
Right now, that is just in locales in both Texas and New Mexico, but could spread to additional states.
Animals entering West Virginia from outside an infested zone but within a designated surveillance zone or high-risk county must be accompanied by a Certificate of Veterinary Inspection (CVI) completed within seven days of movement and certifying the animals are free of screwworm larvae infestation.
Livestock producers should note these requirements do not replace existing federal requirements related to Highly Pathogenic Avian Influenza in livestock.
Permit requests should be submitted during normal business hours (Monday-Friday, 8:00 a.m.-4:30 p.m. ET) by emailing wvpermits@wvda.us.
Montana Updates Emergency Order to Prevent Spread of New World Screwworm
Dr. Tahnee Szamanski, DVM, Montana Dept .of Livestock, State Veterinarian and Animal Health Administrator
WesternAgNetwork.com
June 13, 2026
Due to the evolving New World Screwworm (NWS) situation in Texas and the recent detection of a case in New Mexico, the Montana Department of Livestock (MDOL) has revised its emergency order to strengthen import restrictions on all animals entering Montana from Texas and New Mexico.
The Montana Department of Livestock (Department) is statutorily charged with exercising supervision to protect the livestock interests of the state from disease. Mont. Code Ann. § 81-1-102(1).
Accordingly, the Department's Animal Health Administrator/State Veterinarian has determined that circumstances exist constituting an imminent peril to animal health and welfare in the State of Montana and is issuing an emergency order stopping the entry of animals from states with NWS infestations until specific myiasis control measures have been met.
Full text including import rules
https://westernagnetwork.com/montana-updates-emergency-order-to-prevent-spread-of-new-world-screwworm
3. USDA Issues Directive to Restore Grazing on National Forest Lands and Strengthen Support for America's Ranchers
USDA Office of Communications Bulletin
June 12, 2026
Washington, D.C. - Today, U.S. Secretary of Agriculture Brooke L. Rollins announced the distribution of a comprehensive directive to all U.S. Forest Service employees from the Office of the Under Secretary for Natural Resources and Environment (NRE). These actions advance implementation of the Advancing Grazing on Forest Service and Bureau of Land Management (BLM) Lands Memorandum of Understanding (MOU) and the USDA-Department of the Interior Grazing Action Plan, delivering on the Trump Administration's commitment to strengthen American ranching, restore multiple-use management on federal lands, and combat regulatory lawfare against producers.
"America's ranchers are an integral component of our rural economies, our food security, and our national strength," said Secretary Rollins. "For too long, bureaucratic overreach and activist-driven lawfare have undermined the multiple-use mandate of our National Forests and Grasslands. Today, we are empowering line officers with clear direction and reaffirming grazing as an essential tool for healthy landscapes and vibrant rural communities."
Full text: https://content.govdelivery.com/accounts/USDAOC/bulletins/41bb9e7
4. FAO: Global action needed to stop transboundary animal diseases
Avian influenza, African swine fever, foot-and-mouth disease and New World screwworm pose growing risks to livestock productivity and trade
FAO Release
National Hog Farmer
June 11, 2026
Countries around the world are facing a growing threat from transboundary animal diseases, including New World screwworm, African swine fever, avian influenza, foot-and-mouth disease and peste des petits ruminants, as well as other emerging zoonotic threats such as Andes hantavirus, Ebola and Nipah. As diseases and pests move more rapidly across borders, countries are facing increasing pressure to strengthen prevention, preparedness and response systems.
The stakes are high. Livestock sectors support more than one billion livelihoods and contribute trillions of dollars in economic value each year. Protecting animal health is therefore critical not only for farmers and livestock keepers, but also for food security, trade, economic stability and rural prosperity.
The factors driving disease spread are becoming increasingly complex. Increased movement of animals, people and products, changing production systems, environmental pressures and uneven veterinary and surveillance capacity are creating new opportunities for diseases and pests to spread across regions. Addressing these threats requires stronger surveillance, earlier detection, greater information sharing and closer international cooperation.
5. The Hidden Cost of Calf Scours
Research suggests calves that recover from scours may still carry a production disadvantage years after the ailment has been treated.
By Andrea Bedford
Bovine Veterinarian
June 9, 2026
A calf develops diarrhea during her first weeks of life. The farm treats her, she recovers and within days the immediate crisis is over. As months pass, she grows into a replacement heifer and eventually enters the milking herd. By the time she calves for the first time, few people are thinking about the illness she experienced as a calf.
But new research suggests her body may not have forgotten. A study published in the Journal of Animal Science found the effects of neonatal diarrhea can persist for years, reducing milk production across multiple lactations and challenging the assumption that surviving calves fully recover.
Neonatal diarrhea is among the most common health challenges facing dairy calves. Producers and veterinarians understand its immediate impacts, including treatment costs, labor demands, reduced growth and mortality losses. What has been less clear is what happens to the calves that survive and eventually enter the milking herd.
Full text: https://www.bovinevetonline.com/news/veterinary-research/hidden-cost-calf-scours
6. FDA Issues Emergency Use Authorization for Generic Over-the-Counter Drug to Treat New World Screwworm in Dogs and Cats
FDA Bulletin
June 11, 2026
The U.S. Food and Drug Administration today issued an Emergency Use Authorization (EUA) for generic Nitenpyram Tablets (nitenpyram) for the treatment of New World screwworm (NWS) infestations (myiasis) in dogs, puppies, cats, and kittens that weigh at least two pounds and are at least four weeks old. This is the first generic animal drug authorized for use against NWS.
"The U.S. government is moving aggressively to contain and eliminate New World screwworm," said U.S. Health and Human Services Secretary Robert F. Kennedy, Jr. "Today's authorization is the latest HHS action to strengthen our response. It puts an affordable, fast-acting treatment in the hands of pet owners, strengthens our containment strategy, and helps stop this destructive parasite from spreading further in the United States."
The FDA has concluded that based on the totality of the scientific evidence available, it is reasonable to believe that Nitenpyram Tablets may be effective in the treatment of NWS myiasis in certain dogs, puppies, cats, and kittens, and the known and potential benefits of the product outweigh its known and potential risks.
Full text: https://content.govdelivery.com/accounts/USFDA/bulletins/41b86d2