{"id":14328,"date":"2026-06-11T21:02:00","date_gmt":"2026-06-11T21:02:00","guid":{"rendered":"https:\/\/siliconvalleymovingpost.com\/?p=14328"},"modified":"2026-06-11T21:02:00","modified_gmt":"2026-06-11T21:02:00","slug":"political-blame-game-follows-as-screwworm-parasite-threatens-cattle-in-texas","status":"publish","type":"post","link":"https:\/\/siliconvalleymovingpost.com\/?p=14328","title":{"rendered":"Political blame game follows as screwworm parasite threatens cattle in Texas"},"content":{"rendered":"
\n

By JEFFREY COLLINS<\/strong><\/p>\n

U.S. Agriculture Secretary Brooke Rollins watched sterile flies being released to fight the New World screwworm on Thursday and visited the Texas ranch where one of the first cases of the pest was detected. The screwworm could devastate the nation\u2019s cattle industry.<\/p>\n

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Later, she repeated her assertion that former President Joe Biden\u2019s administration is responsible for the parasite\u2019s return to the U.S. six decades after it was eradicated. Democratic leaders say cuts to the nation\u2019s agriculture agency under President Donald Trump are to blame.<\/p>\n

Screwworms are on their way to becoming a billion-dollar international problem, but can be contained if ranchers are vigilant, watch their herds and other wildlife, and quickly treat any infestations, Rollins said. She pointed to the calf where screwworms were found six days earlier in a wound where its umbilical cord had been attached.<\/p>\n

\u201cHe couldn\u2019t be happier. He\u2019s bouncing around the pasture,\u201d Rollins said.<\/p>\n

Screwworms are flies that lay their eggs in the wounds of warm-blooded animals and feed on living flesh rather than dead tissues. Scientists say releasing sterile flies to mate with females is the most effective way to control the population, a strategy that has worked for decades. A warming planet is complicating efforts by giving screwworms, which thrive in hot, humid weather, more places to spread.<\/p>\n

Billion-dollar response planned to fight screwworms<\/h4>\n

The U.S. Department of Agriculture is preparing an all-out assault on the screwworm, which had been contained in the narrow isthmus of Panama for decades.<\/p>\n

No matter the cause, driving screwworms back south and keeping them out of the U.S. will be expensive. The USDA estimated it would spend over $1 billion on efforts to save cattle herds and other livestock.<\/p>\n

\n<\/div>\n

About $750 million will go toward building and operating a plant capable of producing up to 300 million sterile flies a week. The technique has been used for decades, as female screwworms mate just once, and if they choose a sterile mate, their eggs don\u2019t hatch, and the fly population dwindles.<\/p>\n

The goal is to protect the U.S. cattle industry. Experts think the parasite shouldn\u2019t cause an immediate increase in near-record-high beef prices as long as it doesn\u2019t turn into an outbreak and large groups of cattle die. Screwworms don\u2019t affect food safety.<\/p>\n

The parasite has already disrupted the Mexican beef industry. The U.S. closed its southern ports to Mexican livestock last summer.<\/p>\n

Mexico has had more than 28,000 cases of screwworms since the flies returned two years ago, mostly confined to its southern states. The Mexican government stopped the importation of almost all live animals from the U.S. after screwworms were discovered here.<\/p>\n

\n<\/div>\n

Scientists aren\u2019t sure how screwworms emerged again<\/h4>\n

The U.S. had been almost entirely rid of screwworms for 60 years, with scientists in North and Central America eventually driving it down to the containment zone in Panama. But in 2023, the flies emerged and began heading back north.<\/p>\n

Experts say screwworms are here to stay at least for this summer. Seven cases have already been detected in Texas and New Mexico. A 12-mile (20-kilometer) quarantine zone goes up around every place a case is found.<\/p>\n

As they work toward a solution, scientists say they aren\u2019t sure exactly what led to screwworms leaving the area in Panama where they were boxed in.<\/p>\n

\u201cI don\u2019t have the answer to that one, and I don\u2019t know if anyone does. It doesn\u2019t help us to speculate,\u201d said Jonathan Cammack, a professor of livestock entomology and parasitology at Oklahoma State University.<\/p>\n

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The key now is to ramp up the sterile fly program and get international cooperation to get the pests back down to Panama, he said.<\/p>\n

Climate change is also helping drive the spread of screwworms, said Lee Haines, an associate research professor of biological sciences at the University of Notre Dame.<\/p>\n

\u201cThe fly is a creature of warmth as its entire life cycle, from egg to adult, can complete in as little as three weeks under tropical conditions,\u201d Haines said.<\/p>\n

Even Canada has temporarily stopped importing cattle, horses or other livestock from Texas. The parasites prefer humid areas where temperatures are at least 77 F (25 C), and those days are increasing further north.<\/p>\n

Democrats question cuts; Republicans blame immigration<\/h4>\n

As Rollins moves quickly to implement a billion-dollar response to the screwworm outbreak, she has also blamed the Biden administration, noting that it was in office as the parasite began moving north again.<\/p>\n

She said the flies were with animals that were with or followed immigrants north as well as hitching rides with cattle and other animals being sold by Mexican cartels outside of regular markets.<\/p>\n

\u201cTens of millions of people moving north to America, bringing their livestock with them, the Mexican cartels with the illicit cattle traffic, we knew it was coming,\u201d Rollins told the U.S. Senate Agriculture Committee on Wednesday.<\/p>\n

Nearly a dozen Democratic U.S. senators sent a letter to Rollins this week questioning whether job losses at the USDA have hurt food inspections and livestock safety programs.<\/p>\n

Nearly 20% of the counties in the U.S. that started 2025 with at least one employee from the federal Animal Plant and Health Inspection Service ended the year with none, the letter said.<\/p>\n

Rollins said she has moved over 100 USDA employees into the screwworm response. She said it has been one of her top priorities since Trump picked her to lead the USDA.<\/p>\n

But Democratic U.S. Rep. Ted Lieu of California said blaming Biden is shortsighted and again shows the Trump administration creates problems through reckless spending cuts.<\/p>\n

\u201cThe life cycle of a screwworm is about 14 to 54 days, depending on temperature and humidity. The Trump administration has been in office for over 500 days,\u201d Lieu said earlier this week. \u201cThis is on the Trump administration. They need to own up to it, and they need to apologize.\u201d<\/p>\n

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The USDA is launching a $1 billion plan to stop a screwworm outbreak in Texas, sparking political debate over agency cuts and immigration.<\/p>\n","protected":false},"author":1,"featured_media":14327,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43,2],"tags":[],"class_list":["post-14328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-based-on-facts-either-observed-and-verified-directly-by-the-reporter-or-reported-and-verified-from-knowledgeable-sources","category-news"],"yoast_head":"\nPolitical blame game follows as screwworm parasite threatens cattle in Texas - Silicon Valley Moving Post<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/siliconvalleymovingpost.com\/?p=14328\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Political blame game follows as screwworm parasite threatens cattle in Texas - 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