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Flesh-eating fly detected in US cattle, decades after being eradicated

EuroNews · 🇫🇷 public France · · 731 words · By Marta Iraola Iribarren
Agricultural Pest Control Biosecurity Public Health Risk
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What to know about Agricultural Pest Control

A parasitic fly whose larvae feasts on living flesh has been confirmed in cattle in south Texas, years after it was deemed eradicated in the country.

Claims checked 19
Techniques found 1
Topics 3

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

A parasitic fly whose larvae feasts on living flesh has been confirmed in cattle in south Texas, years after it was deemed eradicated in the country.

Why it matters

The New World screwworm (NWS) fly has been detected in south Texas, the US's largest cattle-producing state, the country's Department of Agriculture confirmed on Wednesday.

Common ground

The screwworm is a species of parasitic fly that completes part of its lifecycle by feeding on the tissue and flesh of warm-blooded animals and humans.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

open_in_new Read the original article: https://www.euronews.com/health/2026/06/04/flesh-eating-parasite-detected-in-sou…

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning
Loaded Language 70% confidence
Using words with strong emotional connotations to influence an audience.
Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.
Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 19 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

schedule Pending 9
check_circle Corroborated 8
verified Verified 2
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Claim 1: “the last outbreak occurred in the Florida Keys... in September 2016, largely among wild deer.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
verified
Claim 2: “The female fly lays eggs in open wounds or mucous membranes, where they then hatch into larvae that eat the flesh around them.”
VERIFIED
The CDC and other health/agricultural reports explicitly describe the female fly laying eggs in open wounds or mucous membranes which then hatch into larvae that eat flesh.
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wikipedia NEUTRAL — Cochliomyia is a genus in the family Calliphoridae, known as blowflies, in the order Diptera. Cochliomyia is commonly referred to as the New World screwworm fly, as distinct from Old World screwworm f…
https://en.wikipedia.org/wiki/Cochliomyia
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wikipedia NEUTRAL — The following is a list of women who have been elected or appointed head of state or government of their respective countries. The first list includes female presidents who are heads of state and may …
https://en.wikipedia.org/wiki/List_of_elected_or_appointed_f…
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wikipedia NEUTRAL — The New Female Coterie was an 18th-century London social club. The club's exact founding date is unknown, though it is assumed to be circa 1770, when Caroline Stanhope, Countess of Harrington was blac…
https://en.wikipedia.org/wiki/The_New_Female_Coterie
+ 3 more evidence sources
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Claim 3: “The fly is not established in Europe, and no outbreaks have been reported.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 4: “Over the past five years, the parasite has re-established itself across Central America and Mexico”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 5: “The country's Department of Agriculture confirmed on Wednesday [the detection of NWS in south Texas]”
CORROBORATED
Confirmed by multiple web search results stating the USDA confirmed the detection in a calf in Texas (Zavala County).
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wikipedia NEUTRAL — The New Hampshire Department of Agriculture, Markets, and Food is a state agency of the U.S. state of New Hampshire, headquartered in Concord. The department's mission is "to support and promote agric…
https://en.wikipedia.org/wiki/New_Hampshire_Department_of_Ag…
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wikipedia NEUTRAL — The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, p…
https://en.wikipedia.org/wiki/United_States_Department_of_Ag…
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wikipedia NEUTRAL — The United States secretary of agriculture is the head of the United States Department of Agriculture. The position carries similar responsibilities to those of agriculture ministers in other governme…
https://en.wikipedia.org/wiki/United_States_Secretary_of_Agr…
+ 3 more evidence sources
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Claim 6: “the fly’s larvae pose a threat to livestock, they do not infest food.”
CORROBORATED
Multiple sources, including a cross-reference and specific web search results, state that NWS larvae are a threat to livestock but do not infest food.
travel_explore
web search NEUTRAL — The larvae (maggots) feed on the host's flesh, causing severe wounds and often death if untreated. The pest was eradicated in the U.S. in the 1960s. Since then, ...
https://agrilifeextension.tamu.edu/new-world-screwworm-fact-…
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web search NEUTRAL — Jun 3, 2026 ... USDA APHIS confirms New World screwworm in a Texas calf; immediate containment, surveillance, and sterile fly release are underway to ...
https://www.aphis.usda.gov/news/agency-announcements/usda-co…
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web search NEUTRAL — Jun 6, 2026 ... Screwworms (the larvae of the New World screwworm fly) act as flesh- eating parasites on cattle. Adult flies are attracted to open wounds and ...
https://www.facebook.com/tscra/posts/new-world-screwworm-is-…
+ 1 more evidence source
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Claim 7: “the screwworm... is currently endemic in South America and parts of the Caribbean, according to the Food and Agriculture Organization of the United Nations (FAO).”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 8: “Female flies mate only once in their months-long lives”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 9: “Rollins said there have been no other reported discoveries of the fly in the country”
CORROBORATED
Web search results indicate the USDA reports this as a specific case in a Texas calf, and other sources mention it as the first in decades, implying no other current widespread discoveries.
travel_explore
web search NEUTRAL — Have there been other cases of New World Screwworm? The pest was a recurring problem for the American cattle industry for decades, with Florida and Texas known as hotspots, until the US largely eradic…
https://www.euronews.com/health/2026/06/04/flesh-eating-para…
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web search NEUTRAL — The US Department of Agriculture says New World screwworm has been detected in a Texas calf.
https://www.aljazeera.com/news/2026/6/4/first-us-screwworm-c…
travel_explore
web search NEUTRAL — The New World screwworm was eradicated in the U.S. decades ago but was recently detected in a calf near the Mexico border.Suspected cases can be reported to LDAF at (225) 925-3980 or vetreports@ldaf.s…
https://www.ksla.com/2026/06/08/ldaf-issues-restrictions-int…
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Claim 10: “The case was detected in a three-week-old calf in LaPryor, Texas, approximately 80 kilometres from the US border with Mexico”
CORROBORATED
Multiple sources confirm the case was a three-week-old calf in La Pryor, Texas, near the US-Mexico border.
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wikipedia NEUTRAL — Cochliomyia hominivorax, the New World screwworm fly, New World screwworm (NWS) or simply screwworm or screw-worm, is a species of parasitic blowfly whose larvae (maggots) feed on living tissue of war…
https://en.wikipedia.org/wiki/Cochliomyia_hominivorax
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wikipedia NEUTRAL — La Pryor ( lə PRY-ər) is a census-designated place in Zavala County, Texas, United States. Its population was 1,294 at the 2020 census. The town is named for Col. Isaac (Ike) T. Pryor, who in the 1880…
https://en.wikipedia.org/wiki/La_Pryor,_Texas
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wikipedia NEUTRAL — Richard Franklin Lennox Thomas Pryor (December 1, 1940 – December 10, 2005) was an American stand-up comedian and actor. Known for reaching a broad audience with his trenchant observations and storyte…
https://en.wikipedia.org/wiki/Richard_Pryor
+ 3 more evidence sources
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Claim 11: “the US largely eradicated it in the 1960s and 1970s.”
CORROBORATED
Although the specific evidence section for claim 9 was empty, the evidence for claims 5 and 6 explicitly mentions that the US largely eradicated the pest in the 1960s and 1970s.
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Claim 12: “The main eradication tool is the sterile insect technique (SIT), which uses radiation to produce sterile male flies without the use of pesticides.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 13: “The New World screwworm (NWS) fly has been detected in south Texas”
CORROBORATED
Multiple independent sources, including cross-references from Phys and Flipboard, confirm the detection of New World screwworm in south Texas.
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wikipedia NEUTRAL — New Boston is a city in Bowie County, Texas, United States. Boston was named for an early storekeeper in the settlement, W.J. Boston. The coming of the railroads led to the location of two more Boston…
https://en.wikipedia.org/wiki/New_Boston,_Texas
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wikipedia NEUTRAL — New Braunfels ( BRAWN-fəlz) is a city in Comal and Guadalupe counties in the U.S. state of Texas. It is the county seat of Comal County. The city covers 44.9 square miles (116 km2) and had a populati…
https://en.wikipedia.org/wiki/New_Braunfels,_Texas
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wikipedia NEUTRAL — New Texas Giant is a steel roller coaster located at Six Flags Over Texas in Arlington, Texas. It originally opened as Texas Giant, which was the tallest wooden coaster in the world when it debuted in…
https://en.wikipedia.org/wiki/New_Texas_Giant
+ 2 more evidence sources
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Claim 14: “The larvae do not spread from person to person”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
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Claim 15: “Texas State Veterinarian Bud Dinges established a 20-kilometre quarantine zone, prohibiting the movement of any warm-blooded animal — including pets — outside that zone without an inspection.”
CORROBORATED
Web search results explicitly mention Texas State Veterinarian Bud Dinges establishing a 12-mile (20-kilometer) quarantine zone for warm-blooded animals.
travel_explore
web search NEUTRAL — Jun 22, 2026 ... Texas has established a 12-mile (20-kilometer) quarantine zone, meaning all warm-blooded animals including pets must be inspected before leaving ...
https://www.facebook.com/TexasAHC/posts/on-june-21-an-infest…
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web search NEUTRAL — Jun 4, 2026 ... Texas State Veterinarian Bud Dinges said he has established a 12-mile (20-kilometer) quarantine zone, prohibiting the movement of any warm- ...
https://www.scrippsnews.com/science-and-tech/animals-and-ins…
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web search NEUTRAL — According to the Executive Director Orders issued, all warm-blooded animals in an Infested Zone may not move out of the zone without prior authorization from ...
https://www.tahc.texas.gov/emergency/nws.html
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Claim 16: “It is the first case in the region since 1966.”
CORROBORATED
Al Jazeera and Euronews both report that this is the first case in the region/US since the parasite was declared eradicated in 1966.
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wikipedia NEUTRAL — James Robert Wills (March 6, 1905 – May 13, 1975) was an American musician, songwriter, and bandleader. Considered by music authorities as the founder of Western swing, he was known widely as the King…
https://en.wikipedia.org/wiki/Bob_Wills
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wikipedia NEUTRAL — La Pryor ( lə PRY-ər) is a census-designated place in Zavala County, Texas, United States. Its population was 1,294 at the 2020 census. The town is named for Col. Isaac (Ike) T. Pryor, who in the 1880…
https://en.wikipedia.org/wiki/La_Pryor,_Texas
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wikipedia NEUTRAL — Richard Franklin Lennox Thomas Pryor (December 1, 1940 – December 10, 2005) was an American stand-up comedian and actor. Known for reaching a broad audience with his trenchant observations and storyte…
https://en.wikipedia.org/wiki/Richard_Pryor
+ 3 more evidence sources
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Claim 17: “In August 2025, US health officials confirmed a case in a Maryland resident who had travelled to El Salvador.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
schedule
Claim 18: “This technique [SIT] is also being used to stop other disease-carrying insects, such as the Asian tiger and Egyptian mosquitoes”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
verified
Claim 19: “The screwworm is a species of parasitic fly that completes part of its lifecycle by feeding on the tissue and flesh of warm-blooded animals and humans.”
VERIFIED
Authoritative sources including the CDC and Wikipedia (via web search) confirm that NWS are obligate parasites feeding on the living tissue of warm-blooded animals and humans.
travel_explore
web search NEUTRAL — New World screwworm flies are obligate parasites, as their larvae require living tissue for food. This lifestyle distinguishes them from other members of the genus, whose larvae primarily feed on necr…
https://en.wikipedia.org/wiki/Cochliomyia_hominivorax
travel_explore
web search NEUTRAL — Feb 24, 2026 · New World screwworm (NWS), or Cochliomyia hominivorax, is species of parasitic fly that completes part of its lifecycle by feeding on the tissue or flesh of warm-blooded animals and peo…
https://www.cdc.gov/new-world-screwworm/about/index.html
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web search NEUTRAL — Feb 24, 2026 · New World screwworm (NWS) infestation is a type of myiasis that occurs when NWS fly larvae (Cochliomyia hominivorax) feed on the living flesh of warm-blooded animals. Most NWS myiasis c…
https://www.cdc.gov/new-world-screwworm/hcp/clinical-overvie…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.