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First human case of flesh-eating screwworm parasite detected in the U.S.
4NY ^ | August 25, 2025 | Patrick Smith

Posted on 08/25/2025 12:12:17 PM PDT by billorites

The first human case of the flesh-eating parasite new world screwworm has been detected in the United States, the Department of Health and Human Services said early Monday.

The case, related to a person who had recently traveled to El Salvador, was confirmed to be screwworm by the CDC on Aug. 4, HHS spokesman Andrew G. Nixon confirmed to Reuters, who first reported the story.

"The risk to public health in the United States from this introduction is very low," he said.

Reuters reported last week, citing U.S. beef industry sources, that a person in Maryland contracted the parasite after visiting Guatemala — it's unclear whether that report concerns the same case.

NBC News has contacted the DHH and authorities in Maryland but had not received a response by the time of publication.

The parasite — the larvae of the new world screwworm fly — can devastate cattle herds and is rife in parts of Central America, including Mexico. It can destroy wildlife and even kill household pets.

There were serious outbreaks in the 1980s and 1990s in Central America and it was eradicated at great expense, only to return in the last two years.

U.S. Secretary of Agriculture Brooke L. Rollins traveled to Texas to announce a five-part plan to combat the screwworm on Aug. 15

This includes plans to breed billions of sterile flies and dump them from the air over southern Texas and Mexico in the hope of stopping the parasite's spread.

The sterilized male flies mate with females, but the eggs don't hatch. Eventually, the population reduces and dies out. This technique worked in the 1960s when the U.S. suffered its last screwworm outbreak.

And the federal government may face calls to accelerate its work on this: When first announced in June, the sterilization plan wasn't due to be operational for "two to three years."

Texas Gov. Greg Abbot, commenting on the federal government scheme, said the state agriculture industry, with its 2 million jobs, was worth $867 billion. "All of this is at risk because of the New World screwworm."

A report from the USDA last year estimated an outbreak of screwworm could cost Texas at least $1.8 billion due to livestock deaths, labor costs and medication.

The little parasitic flies — also known as cochliomyia hominivorax — have an effect that's vast and devastating, but in isolation quite disgusting. The females can lay eggs in any warm-blooded animal, which then hatch unleashing hundreds of screwworm larvae, so-called because of their sharp mouths and their burrowing being compared to the motion of a screw.

Human infections can be fatal but are rare and most cases can be treated.

The USDA has said that screwworms have been making their way north into Mexico from other parts of Central America. The fly is endemic in Cuba, Haiti, the Dominican Republic and some South South American nations it said.

Mexico reported a case in Ixhuatlan de Madero, Veracruz, in July, 370 miles from the Texas border, prompting DHH to immediately shut down cross-border cattle trade, following similar stops in November and May.


TOPICS: News/Current Events
KEYWORDS: screwworm
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1 posted on 08/25/2025 12:12:17 PM PDT by billorites
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To: billorites

Noooooooo!!!!!!!!!!!!!!!!!!!!!


2 posted on 08/25/2025 12:13:47 PM PDT by Fury
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To: billorites

Gee, how did that happen...


3 posted on 08/25/2025 12:14:39 PM PDT by OKSooner (Who says shooting woolly mammoths with a 1911 is a bad thing? )
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To: billorites
Diversity is our strength!

A vibrant multicolored tapestry of invasive parasitic worms and bugs.

4 posted on 08/25/2025 12:14:40 PM PDT by Governor Dinwiddie ( O give thanks unto the Lord, for He is gracious, and his mercy endures forever. — Psalm 106)
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To: billorites

It sounds like a bad case of VD.


5 posted on 08/25/2025 12:17:56 PM PDT by crusty old prospector
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To: billorites

In before the mother-in-law/ex-wife were here first jokes.


6 posted on 08/25/2025 12:25:33 PM PDT by Rinnwald
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To: crusty old prospector

REAL bad!
The patient is basically, ‘Screwed!’

If they find help early, I believe treatment does exist, at least in our country. If they pretend nothing’s wrong so that they may invade America, they may win a spot in the shadows of illegals, but still lose greatly in the Quality of the lives.

**The only thing stopping this from becoming a full blown health panic is the fact that, Screwworms are NOT contagious. Does not become airborne. One has to make direct contact with a contaminated surface or consume contaminated tissue/ meats.


7 posted on 08/25/2025 12:29:09 PM PDT by lee martell
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To: billorites

Screwworm that sounds like a bookies bouncers name.


8 posted on 08/25/2025 12:29:14 PM PDT by Vaduz
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To: billorites

flesh-eating screwworm

Gavin Newsom


9 posted on 08/25/2025 12:30:08 PM PDT by BenLurkin (The above is not a statement of fact. It is opinion or satire. Or both.)
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To: OKSooner

It doesn’t really seem to be disputed: all those hundred of thousands traveling through the Darien Gap brought this and who knows what other gifts with them.


10 posted on 08/25/2025 12:37:21 PM PDT by j.havenfarm (24 years on Free Republic, 12/10/24! More than 10,500 replies and still not shutting up!)
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To: Fury

“Noooooooo!!!!!!!!!!!!!!!!!!!!!”

Not the SCREWWORMS!!


11 posted on 08/25/2025 12:44:42 PM PDT by beef (The pendulum will not swing back. It will snap back. Hard.)
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To: Vaduz

Or an IRS Agent on a mission.


12 posted on 08/25/2025 12:56:10 PM PDT by lee martell
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To: beef

Just dig them out!


13 posted on 08/25/2025 12:57:30 PM PDT by Fury
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To: billorites

“ The first human case of the flesh-eating parasite new world screwworm has been detected in the United States,”

Liar, liar, pants on fire!

Just about every year, some tourist to Latin America or the Caribbean comes back with one in the scalp.

The screwworm was eradicated in the US 60 years ago, but thanks to Biden, we now have them back, necessitating a new round of eradication. I imagine polio will be back, too, and a huge increase in TB and other formerly nearly extinct diseases. That doesn’t include all the new ones, either. Chikungunya, anyone?

Thanks, again, SloJo.


14 posted on 08/25/2025 12:57:41 PM PDT by VanShuyten ("...that all the donkeys were dead. I know nothing as to the fate of the less valuable animals.”)
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To: billorites

And the federal government may face calls to accelerate its work on this: When first announced in June, the sterilization plan wasn’t due to be operational for “two to three years.”


Hello, this is Trump, “when did you say?”


15 posted on 08/25/2025 1:01:12 PM PDT by PeterPrinciple (Thinking Caps are no longer being issued, but there must be a warehouse full of them somewhere)
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To: billorites

I think I heard of a case in Texas about forty years ago or more.


16 posted on 08/25/2025 1:02:14 PM PDT by californian by choice (Who are those who believe in science?)
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To: billorites

Screwworms prefer Mexican food...


17 posted on 08/25/2025 1:02:47 PM PDT by vetvetdoug
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To: Fury


Screwworms are ghastly creatures

18 posted on 08/25/2025 1:10:37 PM PDT by salmon76 ("The heart of the wise inclines to the right, but the heart of the fool to the left." (Eccl 10:2))
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To: salmon76

Ugh - just... ugh.


19 posted on 08/25/2025 1:28:33 PM PDT by Fury
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To: billorites

Screwing with a worm?


20 posted on 08/25/2025 1:40:39 PM PDT by lightman (Beat the Philly fraud machine the Amish did onest, ja? Nein, zweimal they did already!)
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