New World Screwworm Outbreak in Texas Halts Pet Adoptions, Disrupting Nationwide Rescue Efforts

Thousands of dogs and cats in Texas shelters cannot be adopted out of state right now — all because of a tiny but dangerous fly. The New World screwworm has crossed into the US from Mexico for the first time in 60 years, and animal transport across state lines has been put on hold, according to AP News.
The halt is hitting Texas shelters hard. The state relies heavily on sending animals to other states where demand for pets is higher. With that pipeline frozen, already crowded shelters are running out of room.
The New World screwworm is a fly that lays its eggs in open wounds on warm-blooded animals. When the eggs hatch, the larvae — or maggots — burrow into living tissue. The damage can be severe and even deadly if not caught early. It is a serious threat to livestock, pets, and wildlife alike.
The parasite had been eradicated from the US decades ago through a major government program. Its return to Texas marks the first confirmed presence in the country in 60 years, according to Click Orlando. Officials are now scrambling to stop it from spreading further north.
Animal rescue groups normally transport thousands of Texas dogs and cats each year to states in the Northeast and Pacific Northwest. Those regions have high adoption demand but few available shelter animals. Texas, by contrast, has more animals than it can place locally. This system keeps shelters from becoming dangerously full.
But that flow has now stopped. Rescue organizations have paused out-of-state transfers to avoid any risk of moving infected animals — or spreading the screwworm to new regions. News4Jax reported that the pause is affecting thousands of animals across the state.
Texas shelters were already stretched thin before this outbreak. The sudden freeze on transfers is making conditions worse. When shelters fill up, animals face longer stays, higher stress, and in some cases, euthanasia to make room. Rescue workers say the situation is urgent.
Shelter staff are urging Texans to adopt locally if they can. Fostering a pet — taking one home temporarily — is also being pushed as a way to free up space. Every open kennel matters right now, according to SE Missourian.
Officials have not set a clear timeline for when animal transport will resume. It depends on how quickly the screwworm outbreak can be contained. Agriculture and wildlife agencies are working to track and limit the spread of the fly in Texas.
For now, rescue groups are watching closely and hoping the pause is short. The longer transfers stay frozen, the harder it becomes for shelters to manage. Animal welfare advocates say the outbreak is a reminder of how connected public health, agriculture, and pet welfare really are.
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