Cattle Fever Tick Situation Report

The Monthly Cattle Fever Tick Situation Reports are a collaboration with USDA, APHIS, the Texas Animal Health Commission and USDA, ARS.  Monthly reports are submitted to the USDA, APHIS, Veterinary Services, Cattle Fever Tick Eradication Program main office in Laredo, Texas, by program assistants from each county office (Del Rio, Eagle Pass, Webb, Zapata, Starr, Hidalgo, and Cameron Counties plus reports from Incident Command Posts (ICP) set up to respond to tick outbreaks.

These reports include counts of quarantined premises in free and systematic areas and of native and Mexico origin apprehensions. The Texas Animal Health Commission contributes similar data from counties with quarantines. A count of tick sample submissions is also included. These combined agency data are compiled at the Laredo Main office, tables are updated with current monthly counts, and maps indicating the current active infestations are submitted by ARS.  The Cattle Fever Tick Situation reports are posted at the Texas Animal Health Commission website  and provided on the TickApp to expand availability of this important information.

Monthly Fever Tick Situation Report

September 30, 2020

Statewide Quarantine Summary

Total Counties with Fever Tick Quarantines:

178 Infested Quarantine Premises:

84 Exposed Quarantine Premises:

3,099 Adjacent/Check Quarantine Premises:

Total Quarantined Premises: 3,361
Changes since last report:
1 Infested,8 Exposed13 Adjacent/Check

Non-Permanent Quarantine Zone Acreage:

Permanent Quarantine Zone (PQZ) Acreage:
approx. 216,804 acres total

Texas Fever Tick Quarantine Areas

Total Infested Quarantines by Quarter

Fever Tick Data by Texas County

  Jim Wells County Maverick County Webb County
Quarantine Area Type CPQA CPQA & PQZ CPQA &
452 16 597
22,281 38,708 283,126
Active Traces* 66 0 0

  Zapata County Starr County Hidalgo County
Quarantine Area Type CPQA &
598 176 34
257,084 39,732 506
Active Traces* 0 0 34

  Willacy County Cameron County
Quarantine Area Type CPQA TPQA,
516 933
179,978 200,355
Active Traces* 725 43

*Active Traces: When fever ticks are found on a premises, TAHC and/or USDA will conduct an epidemiological investigation. This includes tracing the animal movements on and off of the infested premises in order to prevent the spread and find the source.

Fever Tick Information & Resources

Cattle Fever Ticks, known scientifically as Rhipicephalus (formerly Boophilus) annulatus and R. microplus, are a significant threat to the United States cattle industry. These ticks are capable of carrying the protozoa, or microscopic parasites, Babesia bovis or B. bigemina, commonly known as cattle fever. 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 cattle.

The USDA-Animal and Plant Health Inspection Service-Veterinary Services (APHIS-VS) and Texas Animal Health Commission (TAHC) work together to protect and prevent land, premises, and animals from the deadly cattle disease that can be transmitted by the fever tick.

Website & General Information: