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Division of Communicable Disease Control

Skip Navigation LinksVBDS
 

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Vector-Borne Disease Section

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The Vector-Borne Disease Section (VBDS) protects the health and well-being of Californians from diseases transmitted to people from insects and other animals. VBDS conducts prevention, surveillance, and control of West Nile virus, Lyme disease, plague, hantavirus, and other vector-borne diseases throughout California.

VBDS staff, located in three regional offices and headquartered in Sacramento, provide the following services:

  • Develop and implement statewide vector-borne disease surveillance, prevention, and control programs
  • Design and conduct scientific investigations to further knowledge of vector-borne diseases in California
  • Coordinate preparedness activities for detection and response to introduced vectors and vector-borne diseases, such as West Nile virus
  • Conduct emergency vector control when disease outbreaks occur
  • Advise local agencies on public health issues related to vector-borne diseases
  • Oversee local vector control agency activities through a Cooperative Agreement
  • Oversee the Vector Control Technician Certification and Continuing Education programs
  • Provide information, training, and educational materials to governmental agencies and the public
  • Provide assistance in coordinating issues related to the management of head lice, bed bugs, and other public health pests

Recent Publication

  • 2023 Vector-Borne Disease Section​ Annu​al Report (PDF, 3.3MB)​​

 VBDS Updates
  • CDPH Monthly Updates on Number of
    Aedes-related Infections in California
     ā€“ Updated on the 1st Friday of the month
  • Map of Aedes aegypti and Aedes albopictus Mosquitoes in California by County (PDF) ā€“ Updated on the 1st Friday of the month
  • California West Nile Virus website
VBDS Program Information
  • VBDS Annual Reports
  • 2025 California Mosquito-Borne Virus Surveillance & Response Plan (PDF) ā€“ Updated May 2025
  • Guidance f​or Surveillance of & Response to Invasive Aedes Mosquitoes & Dengue, Chikungunya, & Zika in California (PDF) ā€“ Updated March 2025
Interactive Maps
  • Interactive Map of Invasive Aedes Mosquitoes in California ā€“ Updated March 21, 2025
  • Interactive Map of Hantavirus Surveillance in California  
  • Interactive Map of Lyme Disease and Tick Surveillance in California
  • Interactive Map of Plague in California – Updated January 2021

 Toolkits
  • Don’t Give Bugs a Biting Chance! Repellent Toolkit
  • Tick-Borne Diseases: Occupational Health Toolkit
  • Don’t Let the Ticks Bite! Educational Toolkit for Youth
  • Hantavirus: Reducing Your Risk of Exposure Toolkit
Page Last Updated : May 5, 2025
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