World · Developing story
Screwworm spreads to US wildlife in Texas, USDA says
NewsAgo briefing
The clear picture
What happened
The USDA has confirmed New World screwworm in an elk found on a game ranch in Pecos County, Texas, the first confirmed detection in US wildlife. Bloomberg describes the parasite as potentially deadly, while The Hill says the fly enters animals through open wounds and feeds on living tissue.
Latest development
The Hill’s latest account identifies how New World screwworm infests animals: through open wounds, where larvae feed on living tissue.
Why it matters
The Texas elk detection establishes that New World screwworm has reached US wildlife, rather than being confined to other affected animal populations.
Known / unclear
Coverage expanded from 2 to 3 attributed publishers.
The accounts do not say when the elk was found, how it became infected, whether other animals on the ranch were affected, or what containment measures the USDA has taken.
NewsAgo wrote this briefing with an AI language model, using only the attributed reports listed below. Automated checks require every point to cite one of those reports and reject generic or unsupported text. How we use AI
Sources
Compiled from 3 independent publishers The Hill · Bloomberg · CBS News
CBS News and Bloomberg specify that the animal was an elk in Texas, with CBS News locating it at a Pecos County game ranch; The Hill’s description focuses instead on how the parasite invades and consumes living tissue.
The big question
Whether the Pecos County elk represents an isolated infestation or wider circulation of New World screwworm in Texas wildlife.
The available accounts confirm only one infected elk on a Pecos County game ranch and do not establish the extent of spread.
What happens next
- Any additional USDA-confirmed New World screwworm detections in Texas wildlife beyond the elk in Pecos County.
- USDA findings on the source and geographic extent of the infestation at the Pecos County game ranch.
Bottom line
The first confirmed wildlife case turns New World screwworm into a Texas animal-health concern whose scale cannot yet be determined from the confirmed elk alone.

Explore timelines and source history
Developing story: This developing story groups reporting from 3 publishers. The timeline shows how the coverage has changed.
What the coverage shows
Three or more independent publishers are reporting this development. Wording and emphasis may differ; open the source timeline to compare their reporting.
Compare the publisher timeline ↓Story evolution
- Headline updated
The New World screwworm is a parasitic fly that can enter animals through open wounds and feed on living tissue.
3 sources at this update - Headline updated
New World screwworm was confirmed in an elk in Texas, marking the first case of the parasite in US wildlife.
2 sources at this update - First reported
The New World screwworm was detected in an elk that was discovered on a game ranch in Pecos County, Texas.
1 source at this update