Fever Ticks & Pests

Fever Ticks

What are Fever Ticks?
Cattle Fever ticks, known scientifically as Rhipicephalus (formerly Boophilus) annulatus and R. microplus, are a huge threat to the United States cattle industry.
The Babesia organism attacks and destroys red blood cells, causing acute anemia, high fever, and enlargement of the spleen and liver, ultimately resulting in death for up to 90 percent of susceptible naive cattle.
For more information or questions about the Fever Tick Program, please contact your local TAHC Region Office.

Information for Hunters

    Landowners, lessees or other individuals that plan to move or hunt/harvest nilgai antelope, white-tailed deer, or other free-ranging wildlife and exotic animals capable of hosting fever ticks located in the TPQA or on quarantined infested, exposed, adjacent or check premises located in the Free Area must have the animals inspected before movement. To read more visit the Wildlife Inspection Requirements.

  • VIDEO: Hunting in a Fever Tick Quarantine Area

Cattle Fever Tick Temporary Preventative Quarantine Area – Cameron County, Texas

The Texas Animal Health Commission and the United States Department of Agriculture confirmed the presence of cattle fever ticks on Cameron County premises located outside the permanent quarantine zone in 2014.

In order to protect the land, premises, and animals from exposure to cattle fever ticks, the TAHC created a temporary preventative quarantine area (TPQA) in Cameron County. The TPQA, and its requirements, became effective October 7, 2014. To view a map of the TPQA click here.

The TPQA was modified on November 17, 2016 and now consists of approximately 200,000 acres. The TPQA will be in effect until all premises within it are released from fever tick quarantines and the area is determined to no longer be at risk of infestation.

Within this area, all livestock (cattle and equine) and live or hunted wildlife (such as nilgai antelope and white-tailed deer) that are capable of hosting fever ticks, are subject to movement restrictions, inspections and treatment as prescribed by TAHC fever tick regulations.

Texas Fever Tick Maps: Fever Tick Infestation Map
  Fever Tick
Quarantine Area
Current Infestations
(October 2016)

Cameron County Fever Tick Response Office – Los Fresnos

105 West Ocean Boulevard
Los Fresnos, TX 78566

Phone: 956-443-6609
Fax: 956-233-1732

Cameron County Fever Tick Office Map & Directions

Spraying Schedule

As part of establishing the quarantine, livestock must be inspected and treated prior to movement.

The schedule for spraying equine (horses) or cattle that need a permit to move is: Monday through Saturday at the Lozano Dipping Vat during regular hours or after hours by appointment or Wednesdays by appointment at the Los Fresnos Rodeo Arena. The hours of the Lozano Vat are Monday through Friday, 8 am to 5 pm, Saturdays 7 am to 12 pm. After hours spraying is available by appointment only. To schedule an appointment, call 512-800-2521.

Rules and Regulations


TAHC Information Resources


Fever Tick Quarantines

Current Fever Tick Quarantine Notices & Maps
11/9/2016 — Quarantine Notice     Map
10/7/2014 — Quarantine Notice     Map
Past Fever Tick Quarantine Notices & Maps
6/18/2015 — Release of Temporary Preventative Quarantine Area in Starr County
2/15/2013 — Starr County Quarantine Modification Notice     Map


Informational Websites

  • USDA – APHIS Fever Tick Page
  • Texas A & M Tick Research Laboratory
  • Texas Parks and Wildlife: Ticks and Tick-borne Diseases in Texas


    Information Links