Marin/Sonoma
Mosquito & Vector
Control District
Update to City of Cotati
May 24, 2022
Integrated Vector
Management Program
Stresses prevention via outreach, education as primary strategies Physical control and biological control are also key approaches (source reduction)
Full Programmatic Environmental Impact Report was completed and certified in 2016
Larvicide materials applied are mostly biorational e.g. naturally occurring soil bacteria, or mosquito hormone
Many of the products used by the District are certified for use in organic operations (all listed on our web site)
District works closely with organic growers and beekeepers Local Mosquito Threats
Culex tarsalis
Western Encephalitis Mosquito
West Nile Virus
Culex stigmatosoma
Banded Foul Water
Mosquito
West Nile Virus
Culex erythrothorax
Tule Mosquito
West Nile Virus
Culiseta inornata
Large Winter Mosquito
West Nile Virus
Culiseta particeps
No common name
West Nile Virus
There are 22 different species of mosquito found in Marin and Sonoma Counties. Emerging species of mosquito such
as the Yellow Fever & Asian Tiger mosquitoes could bring the threat of new diseases.
Inventory of Mosquito Sources
These 468 active sources are checked regularly
District Activity in Cotati (2021)
Local West Nile virus activity during 2021
Ø One bird and two samples of mosquitoes
tested positive for West Nile virus
Ø No Human Cases in Sonoma County
Ø Statewide: 147 cases, 12 fatalities
Tick Testing Program
Adult: Western Black-legged Tick
Tick Testing Program
Nymphal Stage
Tick Collecting & Testing Results: Sonoma County
Public Outreach &
Education:
• Press Democrat/Marin IJ
• Social Media: Nextdoor
• Newsletter sent to subscribers
• Seven radio stations
• Presentations to community
groups & in workplaces
• Targeted display ads on streaming
services e.g. Hulu, Vimeo
• Partnerships with Sonoma County
Regional Parks & Conservation
Corps for Waste Tires (Cotati)
Social Media Posts
Challenges Facing the District
Shifts in the climate are changing when and
where different mosquito populations are
occurring
Invasive Aedes species of mosquitoes
continue to spread northward from SoCal
and are now established in Placer and Yolo
counties. They can transmit diseases such as
Zika, Yellow Fever, Chikungunya & Japanese
encephalitis
Aedes aegypti
Yellow Fever Mosquito
Innovation
Drone helps check sites for mosquito
larvae, saving time and fuel Updated truck graphics enhance agency visibility Financials: FY 22-23 Budget
Total Revenues$10.8m
Balanced budget
Budget Increase from prior year:3%
Modest surpluses in recent years used to reduce
accrued unfunded OPEB liability
Portion of budget spent on pension costs: 12%
Pension (MCERA)
Pension Funded Ratio ≈ 95%
As July 1, 2021, no unfunded pension
liability remained but outcome depends on
sustained investment performance over
next few years.
Proportion of PEPRA active members increasing
Thanks -
Any Questions?
Philip Smith, District Manager
[email protected]
www.msmosquito.org
(707) 285-2200