1. USDA Continues to Lead Coordinated Response to New World Screwworm; New Case Confirmed in La Salle County, Texas
Sierra Sun Times
June 10, 2026
June 10, 2026 - WASHINGTON, D.C. - The U.S. Department of Agriculture's (USDA) Animal and Plant Health Inspection Service (APHIS), alongside State partners in Texas and New Mexico, continues to lead an aggressive response to New World screwworm (NWS) in the United States.
USDA's National Veterinary Services Laboratories confirmed a new case of NWS in a calf in La Salle County, Texas, bringing the total cases of NWS in the United States to six. USDA is working closely with the Texas Animal Health Commission (TAHC) to respond and further investigate the case. The joint federal-state field teams have already expanded surveillance and response measures in the area.
2. AVMA mobilizes resources to support frontline practitioners
Veterinarians key to New World screwworm prevention, detection, treatment and containment.
American Veterinary Medical Association
Feedstuffs.com
June 9, 2026
Following the recent detection of New World screwworm (NWS) in Texas, the American Veterinary Medical Association (AVMA) is empowering one of the most important tools in preventing, identifying, treating and containing this parasite: the veterinarian.
Frontline practitioners across the country are already actively engaged through monitoring and diagnosing potential cases, treating susceptible animals, reporting to state and federal authorities and educating their clients. AVMA has mobilized and continues to build on a centralized hub of clinical resources to support practitioners across the profession at www.avma.org/NWS.
"Veterinarians are the trusted experts on the ground who possess the medical expertise required to limit animal suffering and prevent further spread of this parasite," said Dr. Michael Q. Bailey, president of AVMA. "The AVMA is committed to equipping our members with the up-to-date resources and guidance they need to remain proactively vigilant, protect their clients' animals and effectively combat NWS."
3. Animal Health Advisory: Indiana's Updated Animal-Movement Requirements
New World Screwworm: Inspect-Report-Protect
June 9, 2026
The US Department of Agriculture's announcement that New World screwworm (NWS) in the United States serves to remind Hoosiers to watch for unusual flies and/or maggots on livestock, poultry and pets.
While not currently found in Indiana, the insect pest could be carried into the state via people or animals that have visited an infested area or country. The Indiana State Board of Animal Health (BOAH) has been coordinating with the Indiana Department of Health and the Indiana Department of Natural Resources for more than a year to coordinate a response. The latest findings have triggered movement restrictions for animals traveling to Indiana from NWS-infested areas, currently in Texas and New Mexico.
Animal Movement Restrictions
Effective immediately, BOAH has adopted movement restrictions consistent with USDA's NWS playbook to prevent entry of NWS into Indiana. Currently, these apply to all livestock and companion animals coming from an NWS Infested Zone. In addition to any requirements for leaving an infested zone imposed by USDA or the origin state, animals entering Indiana that originate in an NWS-infested zone must meet the following enhanced entry requirements (unless specifically exempted below):
Be accompanied by an animal movement certificate (provided by state-of-origin) approved by the state-of-origin and BOAH prior to shipment.
Be inspected by a USDA-accredited veterinarian within 5 days of departure and obtain a certificate of veterinary inspection (CVI) issued within 5 days of movement to Indiana.
Be accompanied by a CVI documenting application of an effective treatment for NWS:
Livestock and poultry species: applied within 14 days of movement unless going directly to slaughter.
Cats and dogs: applied within 5 days of movement
Exceptions:
Hatching and table eggs and chicks, poults, or ducklings younger than 5 days of age, or birds from National Poultry Improvement Plan (NPIP) certified flocks under Subparts B, C, D, G, H, I, or J of the program moving on a NPIP 9-3 form.
Small mammals (such as hamsters, gerbils, Guinea pigs) and exotic birds that are bred, born, and housed indoors. Proactive treatment, if deemed appropriate by the accredited veterinarian and if safe to administer prior to movement, is encouraged but not required. (CVI required.)
Swine from indoor-housed commercial swine farms moving within a valid Swine Production Health Plan (SPHP), if either of the following requirements is met:
Inspected and found free of wounds within 5 days of movement; or
Effective treatment applied within 14 days of movement, unless going directly to slaughter.
Indiana Animals Returning to Indiana:
Animals leaving Indiana for exhibitions or other temporary movements may return to Indiana on the same CVI used for travel if:
The CVI is still valid (less than 30 days) and
The animal has not traveled into an infested zone.
New Mexico Livestock Board Emergency Animal Health Declaration [edited]
NMLB
June 9, 2026
The New World screwworm (NWS), also known as Cochliomyia hominivorax, is a parasitic fly primarily found
in South America, Cuba, Haiti, and the Dominican Republic.
A positive case of NWS has been identified within the boundaries of Lea County, New Mexico.
The NWS has been declared by the New Mexico Livestock Board (NMLB) to be a significant economic impact
to the Livestock Industry.
Prompt action is necessary to suppress and control the spread of the NWS. Pursuant to the authority vested in
the NMLB by 77-3-9 NMSA 1978, the NMLB will work with the USDA and other State Agencies on a
response plan.
Full text: https://www.nmlbonline.com/documents/Emergency %20Animal%20Health%20Declaration%20New%20World%20screwworm.pdf?un=QO6UcMBO7G
Idaho imposes new animal entry requirements after New World screwworm detection [edited]
By Par Kermani
LocalNews8.com
June 10, 2026
BOISE, Idaho (KIFI) - Idaho is implementing new entry requirements for animals following the detection of New World screwworm in Texas and New Mexico.
To help prevent the spread of the pest into Idaho, state agriculture officials have issued an administrative order establishing additional entry requirements for warm-blooded animals entering the state.
Animals coming from a designated New World screwworm-infested zone must have a Certificate of Veterinary Inspection issued within five days before entering Idaho, along with a movement permit from the state of origin authorizing the animal to leave the infested area.
Animals coming from a state where New World screwworm has been detected, but outside an officially designated infestation zone, must also have a Certificate of Veterinary Inspection issued within five days before entering Idaho.
5. Mexico suspends live animal imports due to New World screwworm
Export restrictions follow news last month that Mexico, Canada were banning certain U.S. pork products due to the confirmed finding of pseudorabies virus.
By Ann Hess
National Hog Farmer
June 10, 2026
Following the confirmation of New World screwworm cases in Texas and in New Mexico over the last week, Mexico's Ministry of Agriculture and Rural Development, in coordination with the USDA, has halted imports of several live animal species, including swine. Until the USDA has more information from Mexico, cattle (slaughter and reproduction); wild ruminants (non-bovine); equine (slaughter, breeding/work and sport/exhibition/transit); sheep and goats (slaughter and reproduction); pet dogs; swine (reproduction); ferrets (commercial and pets); and songbirds/ornamental birds/raptors (commercial and pets) will be temporarily suspended from shipment over the border.
Mexico's agriculture ministry says this action is needed to strengthen its protection, specifically for livestock herds in the northwest part of the country where the presence of NWS in cattle has not currently been reported.
6. Two Wisconsin Horses Test Positive for Equine Influenza
EDCC Health Watch
TheHorse.com
June 10, 2026
Two horses in Wisconsin recently tested positive for equine influenza. The cases are located in Iowa and Columbia counties.
In Iowa County, a 9-year-old Quarter Horse mare at a private facility tested positive for the disease on June 9. She presented on June 6 with a high fever and dry cough and is now recovering. One additional horse is suspected to be positive for the disease.
In Columbia County, a 20-year-old gelding tested positive on June 5 after developing a fever and urine dribbling on June 1. The horse came from a local dealer that rescues horses from kill pens. He was euthanized, in part due to a presumed chronic neurologic condition. There are no other horses on the property.
Full text: https://thehorse.com/1145314/2-wisconsin-horses-test-positive-for-equine-influenza-3/