New World Screwworm - Pitchstone Waters

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New World Screwworm

A collection of 36 posts

Two of Texas’s Deadliest Pests Are Bound to Clash. Will Anybody Win?

New World Screwworm

Two of Texas’s Deadliest Pests Are Bound to Clash. Will Anybody Win?

The flesh-eating New World screwworm has returned to Texas—and the state’s millions of fast-moving feral hogs could turn a dangerous livestock outbreak into a far larger crisis.

Idaho Adds Requirements For Animal Entry In Response To U.S. New World Screwworm Cases

New World Screwworm

Idaho Adds Requirements For Animal Entry In Response To U.S. New World Screwworm Cases

The Idaho State Department of Agriculture instated additional state entry requirements for animals on Wednesday following detections of New World screwworm — a flesh eating parasite — in Texas and New Mexico

Screwworm Cases Rise in Texas

New World Screwworm

Screwworm Cases Rise in Texas

The number of confirmed New World screwworm cases in Texas has risen to four as officials work to stop the spread of the invasive pest that could decimate the U.S. cattle industry.

Combat the New World Screwworm

New World Screwworm

Secretary Brooke Rollins Discusses Actions Taken to Combat the New World Screwworm

This update from Secretary Rollins highlights an aggressive, science-driven effort to stop the northward advance of the New World screwworm before it can threaten American livestock, wildlife, and rural economies.

New World Screwworm May Be in South Texas

New World Screwworm

New World Screwworm May Be in South Texas

AG Commissioner Sid Miller discusses the USDA's discovery that that the New World Screwworm may be in South Texas.

USDA: New World Screwworm Not Yet in the U.S., But Threat Draws Closer

New World Screwworm

USDA: New World Screwworm Not Yet in the U.S., But Threat Draws Closer

This report delivers a clear message: while the New World screwworm has not yet crossed into the United States, federal and state officials believe the threat is real and growing as new cases are detected ever closer to the Texas border.

The “Man Eater” Screwworm Is Coming For The U.S.

New World Screwworm

The “Man Eater” Screwworm Is Coming For The U.S.

After a decades-long campaign to beat the parasites down to Panama, they’re speeding back up north.

Restoring Biodiversity - 4/7/2026

Restoring Biodiversity - 4/7/2026

Screwworm and the role of the USDA’s “tick riders." True conservation requires responsibility, not neglect. Wolves and moose at Pitchstone Waters. And more...

New World Screwworm

An Insidious Pest Threatens Texas Cattle. It’ll Have to Get Past These Guys.

The New World screwworm has been infecting livestock just over the border, in Mexico. “Tick riders,” a 120-year-old group of mounted USDA inspectors, are the nation’s first line of defense.

Screwworm Update Shared At TWA Annual Convention

Screwworm Update Shared At TWA Annual Convention

No screwworms have been found in Texas at this point, despite rumors that screwworms are already here.

More NWS Cases In Tamaulipas; Opinions, Updates Offered

New World Screwworm

More NWS Cases In Tamaulipas; Opinions, Updates Offered

This is the third detection in Tamaulipas. The first detection in the baby calf remains both the northernmost overall detection in Tamaulipas and the northernmost active detection in Mexico.

Screwworm Update - NWS Update Shared, Implications, Preparedness And Response Plan

New World Screwworm

Screwworm Update - NWS Update Shared, Implications, Preparedness And Response Plan

As of November 5, Senasica, Mexico’s counterpart to USDA, reports that there are 757 active NWS cases in Mexico.

Special Report: New World Screwworm

New World Screwworm

Special Report: New World Screwworm

In light of the imminent threat of New World screwworm looming along the Texas-Mexico border, Borderlands Research Institute has pulled together the following information and resources to help guide ranchers and farmers.

The U.S. Confirms its First Human Case of New World Screwworm. What is It?

New World Screwworm

The U.S. Confirms its First Human Case of New World Screwworm. What is It?

U.S. officials confirmed a case of the flesh-eating parasite in a person who traveled from El Salvador. Screwworm typically affects cattle in South America but has spread north in recent years.

Brooke Rollins Followed Through on Her Warning and Closed the Border to Mexican Imports of Live Cattle, Horse, and Bison

Brooke Rollins Followed Through on Her Warning and Closed the Border to Mexican Imports of Live Cattle, Horse, and Bison

U.S. Secretary of Agriculture, Brooke Rollins followed through on her warning and closed the border to Mexican imports of live cattle, horse, and bison due to the continued and rapid northward spread of New World screwworm (NWS) in Mexico.

Restoring Biodiversity - 7/15/2025

Restoring Biodiversity - 7/15/2025

The U.S. has again halted livestock imports from Mexico. Meet tawny crazy ants. Wolves wreak havoc on cattle herds in California. And more...