Susan Buckley, RN, Director, Public Health
Ira Singh, MPH, Deputy Director
Donald I. Baird, MD, Health Officer

Division of Environmental Health


Date Released: 7/2/2010
Subject: Protect Against Mosquitoes and West Nile Virus (WNV)
Contact: Kevin Metcalfe
Phone: (707) 445-6215

• Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak mosquito biting times for many species of mosquitoes.

• Take extra care to use repellent and wear protective clothing during evening and early morning or consider avoiding outdoor activities during these times. The most effective repellents contain one of the following EPA registered active ingredients: DEET, Picaridin or KBR 3023, Oil of lemon eucalyptus or PMD, and IR3535. Follow manufacturer’s instructions on use.

• Install/ Repair Screens including on porches and patios.

• Eliminate Mosquito Breeding Sites including standing water in your yard where mosquitoes may lay eggs. Fill, cover or remove any items that can trap water. Clean small animal troughs and birdbaths weekly. Operate pool/spa filter and skimmer daily to remove egg rafts and larvae.

• Residents are encouraged to contact the Humboldt County Division of Environmental Health, at 445-6215 or toll free at 1-800-963-9241, when concentrations of mosquitoes or man made/artificial breeding sources are encountered. This will assist with our tracking and monitoring information.

• The public is encouraged to assist in the efforts to detect and monitor WNV by calling the California Department of Public Health (CDPH) WNV hotline if they find a bird that has been dead for about a day. A toll free hotline for the public to report dead birds:

1-877-WNV-BIRD (1-877-968-2473)


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