MCHD Vector Control

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Vector Control: Table of Contents
•	Vector Control - Home Page
•	What is a Vector?
•	About Rats
•	About Mosquitoes
•	Gambusia affinis - Mosquito Fish
•	Bed Bugs
•	Code Enforcement
•	Avian Flu and Poultry Disease Prevention
•	West Nile Virus
•	Hantavirus
•	Service Request Form
•	Public Records Request Form
•	Standing Water Report Form
•	Dead Bird Report Form
•	2004 Surveillance Results
•	Pesticide Sensitivity Report Form
•	Control Products
•	Multnomah County Vector Control and Enforcement Advisory Committee
•	Website Links
•	Confidentiality Policy
•	Health Department Home Page

Multnomah County Health Department
Healthy People in Healthy Communities
426 SW Stark, 8th Floor, Portland, OR 97204
Phone numbers:
Health Information and Referral: (503) 988-3816
Administration: (503) 988-3674; FAX: (503) 988-3676; TDD: 1-877-735-7525
Clinic Appointments: (503) 988-3333
Contact Us

Environmental Health Section -
Vector and Code Enforcement
5235 N. Columbia Blvd.
Portland, OR 97203
Driving directions
(503) 988-3464
Email: vector.nuisance@co.multnomah.or.us

Mosquitoes More Abundant this Year: Protect Yourself

Populations of floodwater mosquitoes (Aedes vexans and Ochlertotatus sticticus) are more abundant this year due to multiple factors including extended spring weather, water levels along the rivers, sloughs, islands and floodplains in Multnomah County, and land management practices that encourage standing water (mosquito habitat). These two mosquito species are able to fly up to 25 miles, bite during the day and night and can have more than one generation of young per year.

To protect yourself from mosquito bites:

Remove all standing water on your property.
Make sure your windows and doors have secure fitting screens.
Use personal protection such as insect repellants with DEET, picaridin or oil of lemon eucalyptus.
Consider control devices that collect and trap adult mosquitoes.
Contact a pest control specialist or use an insecticide labeled for adult mosquitoes.

More about mosquitoes»

What is a Vector?
A vector (or carrier) is any organism capable of transmitting disease. Some examples are fleas, ticks, mosquitoes and rodents. Vectors are able to spread disease to humans by biting, burrowing or contaminating our living spaces.

The Multnomah County Vector and Code Enforcement mission is to protect individuals and communities from illness, injury, and health hazards. We are concerned with rats, mosquitoes and health related nuisance codes. For more details see our Mission Statement.

2010 Pesticide Use Plan (~237 KB)

If you have a complaint about rats, mosquitoes, or a neighborhood nuisance please call our office at (503) 988-3464, fill out a web-based form , or E-mail us at vector.nuisance@co.multnomah.or.us. Read our Confidentiality Policy.