What Is IVM?
Prevention and control of mosquito diseases are accomplished through a comprehensive, integrated vector management (IVM) program applying the principles of integrated pest management. IVM is based on an understanding of the underlying biology of the disease transmission system. IVM utilizes regular monitoring of mosquito populations to determine if, when, and where interventions are needed to keep mosquito numbers below thresholds which pose risk of human disease transmission.
Core Components of IVM Monitoring Program
Monitoring provides critical data on:
- Conditions and habitats conducive to mosquito breeding.
- Seasonal abundance of mosquito populations, as established by larval dip counts and adult trapping.
- Levels of disease transmission activity, indicated by the infection rate in mosquito vectors.
- Local factors influencing mosquito populations and virus transmission dynamics.
Data-Driven Decision Making
The collected data guide the selection and implementation of mosquito control measures suited to specific conditions and risks.
IVM Control Strategies
Based on monitoring data, IVM employs a variety of control strategies, including:
- Habitat modification to reduce mosquito breeding sites (Source Reduction).
- Targeted larval control tailored to specific habitats.
- Adult mosquito control through the application of mosquito control products via trucks or aircraft when thresholds are exceeded (not routinely used in Santa Cruz County).
- Community education on risk levels and preventive measures.