State health officials are reminding Californians to remain vigilant against the threat of West Nile virus, with a spike seen in human cases.
“The proportion of mosquitoes infected with West Nile virus is at the highest level ever detected in California,” said Dr. Ron Chapman, director of the CDPH and state health officer.
“Last week, 52 new human cases were reported to CDPH,” Chapman said. “We expect to see more people become infected as this is the time of year when the risk of infection is the highest.”
So far in 2014, West Nile virus has been detected in 37 California counties, the state reported.
There have been 181 human cases reported to CDPH, a significant increase compared to the 101 cases reported by this time last year.
Eight confirmed deaths have been reported to CDPH.
In Lake County, there have been no human cases this year so far, the state said.
However, there have been 15 dead birds, 63 positive mosquito samples and two sentinel chickens in Lake County in 2014, according to the state.
West Nile virus is transmitted to humans and animals by the bite of an infected mosquito.
For most people, the risk of serious illness is low. However, some individuals – less than 1 percent – can develop a serious neurologic illness, such as encephalitis or meningitis.
People 50 years of age or older and people with diabetes and/or high blood pressure have the greatest risk of developing serious complications.
CDPH recommends that individuals prevent exposure to mosquito bites and West Nile virus by practicing the “Three Ds:”
– DEET: Apply insect repellent containing DEET, picaradin, 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 2 months of age and older.
– DAWN AND DUSK: Mosquitoes bite in the early morning and evening so it is important to wear protective clothing and repellent if outside during these times. Make sure that your doors and windows have tight-fitting 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, including flower pots, old car tires, and buckets. If you know of a swimming pool that is not being properly maintained, please contact your local mosquito and vector control agency.
California’s West Nile virus Web site, http://www.westnile.ca.gov/ , includes the latest information on West Nile virus activity in the state.
Californians are encouraged to report all dead birds on the Web site or by calling toll-free 1-877-WNV-BIRD (968-2473).
State health officials: West Nile virus at highest level ever in mosquitoes, significant increase in human cases
- Lake County News reports
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