Zoonotic and Vector-borne Disease Program

The department's Zoonotic and Vector-borne Disease Program works with partners using a One Health perspective to prevent and control zoonotic and vector-borne disease.

Zoonotic and vector-borne diseases are caused by pathogens that spread from animals and arthropods (such as mosquitos and ticks) to people. Lowering the risk to our health depends on:

  • Understanding environmental conditions and how they impact animals, arthropods and the pathogens they carry
  • Understanding the distribution of vector and wildlife populations
  • Understanding where these pathogens exist in our state

Climate changes affect each of these factors, so ongoing disease monitoring is necessary.

What we do

The Zoonotic and Vector-borne Disease program works to lower disease risk and respond to public health events involving zoonotic, vector-borne, or environmental pathogens. We partner with federal, tribal, state, and local health departments. Our program:

  • Monitors amounts of zoonotic and vector-borne diseases in Washington
  • Reports location and amounts of zoonotic and vector-borne disease 
  • Emphasizes the connections of human, animal, and environmental health, and uses data to improve One Health
  • Prevents disease through public health efforts and education 
  • Collaborates with One Health colleagues to improve the health of people, animals, and our shared environments
  • Prepares for and responds to outbreaks and public health emergencies


Publications and partnerships

Cryptococcus gatti
Zoonotic Enteric Diseases
Tickborne Diseases
Valley Fever/Coccidioidomycosis
Q Fever
West Nile Virus

Contact us

Local Health Jurisdictions in Washington State can request technical assistance:

  • Email Us
  • 206-418-5500: Phone (24-hour contact)
  • 206-364-1060: Secure FAX
  • 1-877-539-4344: 24-hour contact (inside Washington State only)

Washington residents or healthcare providers should contact their local health jurisdictions for assistance.