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Marin/Sonoma Mosquito & Vector Control presents annual report; no West Nile detected locally in 2024
Summary
The district reported nearly 6,200 service requests in 2024 and said Marin and Sonoma counties had zero West Nile virus detections last year; the district emphasized ongoing surveillance for invasive Aedes species and described emerging control tools.
Rohnert Park — The Marin/Sonoma Mosquito and Vector Control District presented its 2024 annual report to the Rohnert Park council on April 22, reporting roughly 6,200 service requests across the two counties and noting no local detections of West Nile virus in 2024. District manager Peter Bonkruid said the district handled about 2,800 mosquito‑control service requests, roughly 2,500 ground‑nesting yellow‑jacket requests, about 400 rodent inspections and around 500 mosquito fish deliveries during the year.
"Great news for 2024, we had no West Nile virus activity," Bonkruid said, noting statewide there were 124 human West Nile cases in 2024 with 12 fatalities. He reviewed the district’s integrated vector management approach, surveillance network (about 25,000 mapped inspection locations across Marin and Sonoma) and public outreach activities, including a strong classroom presentation program.
Bonkruid warned that invasive Aedes aegypti and Aedes albopictus have moved steadily north in California; although the district has not detected them in Marin or Sonoma, bordering counties have reported findings and local surveillance remains active. He described emerging trap improvements (including a 3D‑printed trap under development) and sterile‑insect techniques being tested elsewhere as potential tools if Aedes establishes locally.
Council members thanked the district for outreach and reminded residents to remove small containers of standing water. Bonkruid invited council and residents to visit the district facility in Cotati.
