Presented by Tristan Hallum, MPH at the 93rd Annual Mosquito and Vector Control Association of California (MVCAC) Conference in Oakland, CA.

Abstract:

In 2024, human dengue infections saw a substantial increase across endemic regions in the Americas, leading to the declaration of a public health emergency in Puerto Rico and prompting the CDC to issue a health advisory to the United States, citing an elevated risk of dengue virus infections among travelers. This rise was reflected in the number of cases reported in California, whereby early October 2024, the total number of cases had already surpassed the year-end total for 2023. Dengue cases within the San Gabriel Valley Mosquito and Vector Control District's service area mirrored this statewide increase. To respond consistently for each case, a standardized surveillance schedule was implemented and executed. This schedule combined the Enhanced Surveillance model regularly utilized by the San Gabriel Valley surveillance department and the California Department of Public Health’s recommended 45-day monitoring window for local transmission of Aedes-borne diseases. This surveillance model informed control teams responding to several local dengue transmissions within the District's service area, offering insight for when additional treatments might be necessary. By standardizing its response to local dengue infections, the San Gabriel Valley Mosquito and Vector Control District was able to quickly mount a multifaceted communicative, surveillance, and control operation for multiple dengue infections in a short time frame. 

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