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[Ventura County, CA] – Ventura County Public Health Officer, Dr. Robert Levin, announced today two
confirmed cases of West Nile virus (WNV); one of them passed away from complications from the virus
last Thursday. Both Ventura County residents are from Simi Valley.
WNV is influenced by many factors such as climate, the number and types of birds and mosquitoes in an
area, and the level of immunity in birds to WNV. It is possible that the drought has contributed to WNV
amplification by reducing sources of water for birds and mosquitoes. As birds and mosquitoes seek water,
they are coming into closer contact with humans and amplifying the transmission of the virus.
Forty California counties have reported WNV activity so far this year for a total of 311 cases in humans.
The median age of cases throughout the State is 57 years with 59% of them being in males.
“WNV is transmitted to humans and animals by the bite of an infected mosquito. The risk of serious
illness to most people is low. However, some individuals – less than one percent – can develop a serious
neurologic illness such as encephalitis or meningitis,” says Dr. Levin.
People 50 years of age and older have a higher chance of getting sick and are more likely to develop
complications. Studies also indicate that those with diabetes and/or hypertension are at greatest risk for
serious illness.
The California Department of Public Health recommends that individuals prevent exposure to mosquito
bites and WNV by practicing the “Three Ds”:
DEET – Apply insect repellent containing DEET, picaridin, oil of lemon eucalyptus or IR3535 according
to label instructions. Repellents keep the mosquitoes from biting you. DEET can be used safely on infants
and children two months of age and older.
DAWN AND DUSK – Mosquitoes bite in the early morning and evening so it is important to wear proper
clothing and repellent if outside during these times. Make sure that your doors and windows have tightfitting
screens to keep out mosquitoes. Repair or replace screens with tears or holes.
DRAIN – Mosquitoes lay their eggs on standing water. Eliminate all sources of standing water on your
property, by emptying flower pots, old car tires, buckets, and other containers. If you know of a
swimming pool that is not being properly maintained, please contact your local mosquito and vector
control agency.

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For 24/7 Access to Mental Health services and/or if you are experiencing a Mental Health Crisis please call Ventura County Behavioral Health Access & Crisis Team at 1-866-998-2243.


For 24/7 Access to Substance Use services, please call Ventura County Behavioral Health Substance Use Treatment Services Toll-free Access Line at 1-844-385-9200.


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