3/10/2023
1 RiversideCA.gov
1 RiversideCA.gov
NORTHWEST MOSQUITO & VECTOR CONTROL
DISTRICT 2022 YEAR-END REVIEW
City Council
April 4, 2023
PUBLIC WORKS DEPARTMENT
NORTHWEST
MOSQUITO &
VECTOR CONTROL
DISTRICT
UPDATE
By: Eric Ballejos, Public Information and T echnology Officer 1 2
3/10/2023
2 YEAR-END
REVIEW
2022
By the Numbers
• Over 8,000 mosquitoes trapped in Riverside, 2,437 females tested in 65 pools (22% of total testing), 9 positive pools of West Nile virus
• Inspections: 6,863
• T reatments: 2,260
• Service Request: 513
• 198 Mosquitoes (38%), 145 Bee (28%), 91 Other (18%) and
79 Rodent (16%)
• Northwest MVCD attended many public outreach events
throughout the city including the Riverside Insect Fair.
Africanized Bee Program
• Second most common complaint from residents
• 145 Service Requests
• Only treated 46 sites
• Bee removal from non-structural sites i.e., water
meter box, tree holes, tires, and other cavity sources
• Northwest MVCD will only remove beehives when
there is a direct threat to public safety, 30-foot limit • Northwest MVCD does not provide emergency bee
services, residents must call 911
Differences Between Honeybees and
Africanized Honeybees
Honey Bees
• Far less aggressive
• Nest in much larger
cavities
• Once agitated, will
usually calm down
after 10-15 minutes
Africanized Bees
• Guard a large area around
hive
• Can chase victims up to 1/4
of a mile
• Stay agitated for hours or
until sun set
*O’Malley, M.K, August 2015, Difference Between European and African Honey Bees 3 4
3/10/2023
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