Inside the Shocking Screwworm Outbreak Threatening America’s Beef Industry and What It Means for You
Imagine firing up the grill for a juicy Texas steak only to find out Canada just slammed the border shut on all livestock from the Lone Star State — not because of tariffs, but due to something straight out of a horror flick: screwworms. Yep, those creepy critters aren’t your garden-variety pests; their larvae tunnel right into living tissue and chow down until the unfortunate host is toast. Now, while Texans keep their beef sizzling stateside, their northern neighbors aren’t having it, and suddenly, a viral TikTok steak-basting video with over 1.8 million views is stirring the pot — literally and figuratively. What’s the real deal behind Canada’s sudden beef blackout? Are these bugs the stuff of nightmares or just an overblown scare? Buckle up, because this isn’t your typical cattle tale. LEARN MORE
Canada announced a temporary ban on livestock from Texas due to screwworms, parasitic flies whose larvae burrow into living tissue and feed on it until the host is dead.
Hearing that an American export was banned by another country while remaining available in the U.S. is certainly going to raise concerns.
So, here’s what you need to know about Canada’s temporary ban on Texas beef due to fears about parasitic screwworms.
In a viral video with more than 1.8 million views as of this writing, content creator Steffani (@ouisteffani) is basting a steak, but the text overlay reveals the upsetting truth about the American beef market at the moment.
@ouisteffani/TikTok, Sandra Seitamaa/UnsplashA woman on TikTok brought attention to Canada’s temporary ban on Texas beef due to concerns about a screwworm outbreak.
“Canada just banned all beef from Texas. Allegedly, farmers are being discouraged from reporting screwworms in cattle so they don’t lose money. There was a department in charge of making sure this didn’t happen, but DOGE cut it,” the text overlay on the video reads.
However, the truth is that all livestock from the US was banned.
“Screwworms have the potential to jump to people, btw,” the video caption continues, stoking more fear that these parasites could be transmitted from animals to humans.
Here are the facts about screwworms and Canada’s ban on American beef.
What Is A Screwworm?
The screwworm is a parasitic fly whose larvae burrow into and feed on living tissue. If left untreated, this can kill an animal in seven to 10 days.
On June 3, 2026, the United States Department of Agriculture (USDA) confirmed the presence of a New World screwworm in a three-week-old calf in Zavala County, Texas — the first confirmed case in a U.S. livestock herd in decades.
Wikimedia CommonsUnlike other similar parasites, screwworm larvae will eat healthy issues, and not just dead or dying tissue.
By June 8, Farm Progress reported five confirmed U.S. cases, including two calves in separate Texas counties, a goat in Texas about 140 miles from the Mexican border, and a dog in New Mexico (making it the first case outside Texas). Texas Gov. Greg Abbott declared a state of emergency, so additional resources from state agencies can be used to combat the screwworm. At the national level, President Trump appointed a new senior adviser for screwworm preparedness.
Canada moved quickly in response. On June 5, the Canadian Food Inspection Agency announced a temporary ban on livestock from Texas — cattle, horses, and other warm-blooded animals — barring any that had been in the state within 21 days of crossing the border, according to the BBC.
Meanwhile, Abbott told reporters that the outbreak was “likely to spread over the course of the summer.”
Unlike what the TikTok video said, this is a livestock ban, not just a beef ban. Screwworms feed on the living tissue of many animals, not only cows. However, the USDA has said that the country’s food supply is not at risk because screwworms do not infest meat, fruits, vegetables, or other types of food.
Officials Call On Farmers To Report Cases Immediately
Texas Agriculture Commissioner Sid Miller has warned publicly that ranchers may not report suspected cases because they don’t want the government restricting cattle movement and triggering quarantines, Farm Progress reported.
Bailey Alexander/UnsplashCanada banned all Texas livestock — not just beef.
U.S. Agriculture Secretary Brooke Rollins quickly responded, calling Miller’s statement “a very unserious comment from perhaps an unserious ag commissioner with just a few months left.”
Miller, who indeed lost his primary in March and won’t be returning to office, stood his ground, saying that he heard the sentiments that he relayed from ranchers personally.
Then, Rear Adm. Michael Schmoyer, who leads the USDA’s New World Screwworm Directorate, didn’t mince words about what’s at stake when it comes to reporting cases: “You want to get this over quicker? Have people report. Ask people to report. Beg people to report. That’s what we need.”
Do DOGE-Related Budget Cuts Have Something To Do With Texas’ Screwworm Problem?
When the Department of Government Efficiency (DOGE) dismantled the U.S. Agency for International Development (USAID) in early 2025, a program dedicated to monitoring the spread of screwworms across the U.S.-Mexico border went with it.
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