1. FDA-authorized and approved animal drugs for New World screwworm
Author(s)Abi Bautista-Alejandre, Assistant Editor
DVM360.com
June 8, 2026
List of available treatments for screwworm infestations in cattle, horses, sheep, goats, deer, swine, cats, dogs, exotic, zoo, and wildlife species. Plus guidance for practitioners before using these products.
Over the past year, the FDA has issued a series of emergency use authorizations (EUAs) and conditional approvals for drugs to prevent and treat New World screwworm (NWS) infestations in livestock, companion animals, exotic species, and wildlife.
Veterinarians who suspect NWS should immediately contact their state animal health official or USDA. Contact information can be accessed through this USDA contact page.
See: https://www.aphis.usda.gov/animals/animal-health/livestock-and-poultry-disease/stop-screwworm/report-suspected-cases-screwworm
In Texas, suspected livestock cases should be reported directly to the Texas Animal Health Commission (TAHC) in their closest area office. The USDA's National Veterinary Stockpile has also relocated NWS treatment supplies to Texas, where they are available through TAHC.
See: https://www.tahc.texas.gov/agency/contact.html
Below is a roundup of the drugs currently authorized, conditionally approved, or otherwise available for the prevention and treatment of NWS.
Full text: https://www.dvm360.com/view/fda-authorized-and-approved-animal-drugs-for-new-world-screwworm
New Restrictions Issued as Screwworm Threat Moves Closer
By Haylie Shipp, Southeast Regional Ag News
AgInfo.net
June 9, 2026
With New World screwworm now confirmed in South Texas, state agriculture departments across the Southeast are taking steps to keep the pest from moving farther east.
In Florida, Agriculture Commissioner Wilton Simpson issued an emergency rule placing heightened restrictions on the importation of warm-blooded animals from designated infested zones and other high-risk areas. Simpson said the state is taking aggressive action to protect agricultural producers from what he called a very serious threat.
Meanwhile, the Georgia Department of Agriculture has implemented enhanced interstate movement requirements for warm-blooded animals entering the state. Commissioner Tyler Harper said the measures are being taken out of an abundance of caution following the detection in Texas.
Georgia now requires animals entering from an infested zone to comply with national movement guidance and obtain a state entry permit. Additional veterinary inspection requirements also apply to animals originating from designated high-risk Texas counties.
This remains an evolving situation, and we'll continue tracking developments. For links to the full Florida and Georgia requirements, visit...
New World Screwworm cases expand; Kentucky remains on alert [edited]
By Dennis K Brown
LewisCountyHerald.com
June 9, 2026
Kentucky livestock and animal health officials remain on alert after federal authorities confirmed additional cases of New World Screwworm in Texas and the first confirmed case outside the state, raising concerns about the spread of the flesh-eating parasite that was eradicated from the United States decades ago.
Kentucky's emergency movement requirements for certain livestock entering the Commonwealth from Texas remain in effect through at least Aug. 1.
The Kentucky Department of Agriculture's Office of the State Veterinarian requires livestock entering Kentucky from Texas to have a Kentucky permit number, a current Certificate of Veterinary Inspection, and documentation certifying the animals are free of clinical signs of screwworm infestation.
Additional monitoring and inspection requirements apply after animals arrive in Kentucky.
Full text: https://lewiscountyherald.com/new-world-screwworm-cases-expand-kentucky-remains-on-alert/
Louisiana puts restrictions on animals entering state after screwworm reaches Texas [edited]
By: Greg LaRose
Louisiana Illuminator
June 8, 2026
Louisiana officials have tightened restrictions on animals entering the state, with five cases of the flesh-eating parasite confirmed so far in the United States.
Dr. Daniel Myrick, Louisiana's state veterinarian, issued an emergency order* Friday that allows animals coming from a screwworm-infected state to enter Louisiana only if they do not originate from or pass through an "infected zone." The animals also need an official inspection certificate declaring they are free from infection. The certificate is good for only seven days after the inspection.
*See: https://assets.ctfassets.net/pc5e1rlgfrov/65PLJptdT8qw9ACPKAbBGR/4e966628e0eefdfe3ac6f8c2bb9f1f74/New_World_Screwworm_Emergency_Order.pdf
Animals that come from or pass through an infected zone must first pass "movement requirements" from their state of origin, obtain an inspection certificate and receive a permit from the Louisiana's Office of Food Health and Safety, part of the state agriculture department, according to Myrick's order.
Full text: https://lailluminator.com/2026/06/08/louisiana-screwworm/
Michigan Quarter Horse Tests Positive for Strangles
EDCC Health Watch
Equus Magazine
June 9, 2026
On June 1, a 4-year-old Quarter Horse gelding in Genesee County, Michigan, tested positive for strangles. The horse developed clinical signs on May 30, including fever, nasal discharge, and swollen lymph nodes. He is currently quarantined.
Strangles Cases Confirmed in 2 Florida Counties
EDCC Health Watch
TheHorse.com
June 8, 2026
Two horses in Florida have recently tested positive for strangles.
In Sarasota County, one gelding tested positive for the disease on June 2. Two additional horses are suspected to be positive, and five horses have been exposed. The affected horses are quarantined.
In Palm Beach County, a 16-year-old Standardbred mare tested positive on June 3. Two additional horses have been exposed. The facility and another epidemiologically linked premises have been quarantined.
Full text: https://thehorse.com/1145286/strangles-cases-confirmed-in-2-florida-counties/
4. June 2026 ZOHU Call Webinar
Register and join us for the next ZOHU Call on June 17, 2026, 2 - 3 pm ET.
CDC
June 8, 2026
Presentation:
Food Adulteration: Understanding the largest case of intentional adulteration of animal food and infant formula using melamine
By Renate Reimschuessel B.A., V.M.D, Ph.D
Retired from Food and Drug Administration, Center for Veterinary Medicine
Register here: https://tinyurl.com/3pseeujf
5. SDSU researchers develop vaccine for destructive poultry virus
By Addison DeHaven
SDSU News
June 9, 2026
In early 2024, a team of researchers in South Dakota State University's Animal Disease Research and Diagnostic Laboratory was the first to identify a fast-spreading respiratory viral outbreak affecting turkeys and chickens in major poultry-producing regions of the U.S.
Limited or restricted outbreaks of avian metapneumovirus (aMPV) subtype C had occurred previously, but this was the first time subtypes A and B - the two most pathogenic strains of the virus - had been identified in the U.S.
Led by assistant professors Sunil Mor and Tamer Sharafeldin, the team quickly developed assay tests to identify and confirm the virus in flocks. They also immediately began work to develop a vaccine - the primary control method for viral outbreaks in livestock.
Roughly two years after the initial identification, the research team has developed both "live" and "killed" vaccine candidates for aMPV subtype B. Future experimental tests and field trials will confirm the efficacy of the vaccines on subtype A.
Full text: https://www.sdstate.edu/news/2026/06/sdsu-researchers-develop-vaccine-destructive-poultry-virus