There are 48 different species of tick in California and most of them are not known disease carriers. In Alameda County the American Dog Tick (Dermacentor variabilis), Pacific Coast tick (Dermacentor occidentalis) and Western Black-legged Tick (Ixodes pacificus) are the three most common ticks; they are the vectors of Tick-borne Relapsing Fever, Rocky Mountain Spotted Fever, Tularemia, Anaplasmosis, Ehrlichiosis, Babesiosis and Lyme disease. In addition, people and domestic animals can develop Tick Paralysis following a tick bite.
Our District conducts tick surveillance and disease testing. Lyme disease, Anaplasmosis, Rocky Mountain spotted fever, and Tularemia have been identified from the ticks collected in the County. Hikers, campers and anyone working or playing outdoors in the brushy area should take special caution to avoid a tick bite.
Our District provides tick identifications, educational presentations, and to helps facilitate testing.
- Lyme Disease Brochure (PDF — 279kb)*
- Map of Black-legged ticks found in Alameda County (PDF — 871kb)*
- Tick Bite Information Form (PDF — 25kb)*
- Instructions for Submitting ticks for Testing (PDF — 98kb)*
* Portable Document Format (PDF) file requires the free Adobe Reader.