Screwworm Movement Rules Are Straining Texas Animal Shelters

Update: two Texas zones have been released

USDA APHIS announced on August 31 that two Texas New World screwworm infested zones had met the federal requirements for release. The change covers portions of La Salle and Webb counties in Zone 02.A and portions of Gillespie, Kerr and Kimble counties in Zone 03.

The release removes New World screwworm movement requirements for livestock and pets within those areas. Animals there can resume normal movement within Texas and to other states without a New World screwworm inspection. Other interstate requirements and international export rules still apply, and several Texas infested zones remain active. Animal owners and rescue groups should check the current Texas Animal Health Commission map before arranging travel because the boundaries can change.

At a glance

• An Associated Press report published August 19 found that animal movement restrictions tied to New World screwworm are disrupting some transfers from Texas shelters.
• Transfers to other states help participating shelters open kennel space in areas where local intake can exceed local adoption demand.
• Texas orders restrict movement from designated infested zones, not every pet movement from every part of the state.
• Requirements can depend on where an animal starts, the destination state and current veterinary inspection or certification rules.
• Movement precautions do not mean that shelter animals are presumed to be infected.

Animal shelters in parts of Texas are losing one of their pressure release valves as states respond to New World screwworm. An Associated Press report published August 19 describes out of state transfers being delayed, paused or made more complicated by changing destination requirements. For shelters that routinely move adoptable dogs and cats to regions with more available homes, fewer transfers can quickly mean fewer open kennels.

The story is about shelter capacity and disease control logistics, not evidence of widespread infection among animals awaiting adoption. Rules vary by location and can change. A dog in a Texas shelter may face a different process depending on whether the shelter is inside an active zone, which state would receive the animal and what documentation that state currently requires.

Why interstate transfers matter to shelters

Shelter transport programs move animals from communities with crowded facilities to shelters or rescue partners that have more kennel space or stronger adoption demand. The receiving organization can then place the animal locally. The arrangement is not available to every shelter, but where it exists, each completed transfer opens room for the next stray, surrendered or seized animal.

The AP report describes Texas organizations that rely on those routes and are now adapting to restrictions from receiving states. One profiled shelter that ordinarily sends hundreds of dogs outside Texas temporarily used outdoor exercise areas for additional capacity. New York later allowed dogs from Texas under a veterinary certification requirement, according to the report. That example also shows why this is not accurately described as one nationwide ban.

What the official movement rules say

The Texas Animal Health Commission maintains the state's current New World screwworm zones and executive orders. The orders reviewed by Buddylio restrict movement of warm blooded animals from designated infested areas unless the movement is authorized and inspection or other conditions are met. The boundaries have changed as detections and surveillance have changed, which makes current official maps and orders more reliable than a fixed list copied into an article.

Destination states can add their own entry conditions. That creates a difficult operating problem for shelters: staff must track where each animal is located, whether it can leave that zone, what examination or certificate a receiving state expects and whether a partner can still accept the transfer. A route that worked last week may need new paperwork or a different plan this week.

Why dogs are included in the precautions

New World screwworm is a parasitic fly whose larvae can infest wounds and living tissue in warm blooded animals. USDA says it can affect livestock, pets and wildlife, and rarely people. Federal and state agencies began responding after U.S. detections were confirmed in June. USDA has also confirmed canine cases and continues to update a public dashboard as case status changes.

One early dog report illustrates why careful sourcing matters. USDA initially announced a dog case through a veterinarian in Andrews County, Texas, then reclassified the location to Lea County, New Mexico, after establishing where the dog lived. A current dashboard is more useful than repeating an early running total without its corrections.

Inspection requirements add time and cost

A veterinary examination can help a transfer meet the receiving state's rules, but it also requires an appointment, staff time, records and sometimes a certificate for each animal. Those steps are reasonable disease control tools. They can still become a significant bottleneck when a shelter needs to move many animals and local veterinary capacity is limited.

The burden is not distributed evenly. A large organization may have veterinary staff and established transport partners. A small rural shelter or volunteer rescue may depend on outside appointments and donated transport. The same added step can therefore mean a short delay for one group and a canceled transfer for another.

What remains uncertain

There is no single public count showing exactly how many Texas shelter transfers have been delayed or how many kennels remain occupied because of the restrictions. The AP report documents examples and quotes animal welfare organizations, but it does not establish a statewide total. Buddylio is not turning those examples into an unsupported estimate.

The rules and affected zones are also moving targets. A shelter that could not send animals to a destination earlier in the response may later qualify with inspection or certification, while a new detection could produce a different restriction elsewhere. Readers arranging a transfer or adoption should confirm current requirements with the sending shelter, receiving organization, destination state and official animal health authorities.

What adopters can do

• Ask the shelter whether the animal can travel to your state before making transportation plans.
• Follow the shelter's veterinary and paperwork process rather than arranging an informal handoff around it.
• If you live near an affected shelter, ask whether fostering, local adoption, supplies or transport support is currently more useful than a general donation.
• Use USDA and state animal health pages for current zones and reporting instructions.
• Contact a veterinarian promptly about a suspicious wound or visible larvae; do not attempt to diagnose or treat an infestation from an article.

People whose adoption can proceed can use Buddylio's free Adoption Day Checklist to organize records, transport supplies and the first handoff without replacing the shelter's current health requirements.

The immediate problem for shelters is practical: animals continue to arrive while some usual exits have narrowed. Careful inspections and movement rules serve a real containment purpose. The challenge is helping shelters follow them without leaving adoptable animals waiting indefinitely for space to open.

How we reported this: Buddylio reviewed the named sources, checked the organizations and figures shown above, and added context for animal lovers. Any illustration is labeled and does not depict the actual animals or scene. This report was updated on September 1, 2026 after APHIS released two Texas infested zones. Other zones and destination requirements remain in effect and can change; the linked USDA and Texas pages carry the current official information. Articles are editorial content, not veterinary advice.