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.

Cattle Fever Tick Quarantine Areas

Control Purpose Quarantine Area, Live Oak County

Since the first detection of fever ticks on a Live Oak County premises in late November 2016, the TAHC has confirmed seven additional infested premises in the county.

A Control Purpose Quarantine Area (CPQA) was established in a portion of Live Oak County on November 30, 2016 and the TAHC continues to conduct epidemiological investigations related to the detection of fever ticks in the area, as well as ticks that may have been moved on cattle, horses, and exotic hoofstock shipped from infested premises.

In addition to the Live Oak County CPQA, there are six other CPQAs located in portions of Jim Wells, Kleberg, Starr, Webb, Willacy and Zapata counties and one Temporary Preventative Zone in Cameron County. There are approximately 541,462 acres under various types of fever tick quarantines outside of the Permanent Quarantine Zone.

To learn more about the Live Oak County situation, please read the Live Oak County Fever Tick Update.


Live Oak County CPQA Live Oak County CPQA (January 2017)

Temporary Prevantative Quarantine Area, Cameron County

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. 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.


Fever Tick Quarantine Area Fever Tick Quarantine Area

Fever Tick Infestation MapCurrent Infestations (December 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

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
  • Fever Tick Quarantines

    Current Fever Tick Quarantine Notices & Maps

    Past Fever Tick Quarantine Notices & Maps

    Informational Websites