- Lake County News reports
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First human West Nile virus death of 2016 in California confirmed; Sacramento senior dies
NORTHERN CALIFORNIA – California Department of Public Health Director and State Health Officer Dr. Karen Smith announced the first confirmed death in California this year due to West Nile virus.
The person who died was a senior citizen in Sacramento County, Smith said.
“West Nile virus can cause a deadly infection in humans, and the elderly are particularly susceptible, as this unfortunate fatality illustrates,” said Dr. Smith. “West Nile virus activity in the state is increasing, so I urge Californians to take every possible precaution to protect themselves against mosquito bites.”
CDPH has reported 10 human cases of WNV from eight California counties this year. In addition, 764 dead birds from 26 counties have tested positive for WNV in 2016 and 1,487 mosquito samples from 30 counties have also tested positive for WNV this year.
The number of WNV positive dead birds and mosquito samples exceeds the numbers at this same time last year and are above the state’s most recent five-year average.
In Lake County, there have been no human cases so far this year, according to local and state officials.
Lake County has had several human cases over the past decade. While the county had no human cases from 2007 to 2011, and no cases in 2013, it had one case each in 2012 and 2014, and two cases in 2015, state records showed.
The first case of West Nile virus in a bird – a domestic turkey from north Lakeport – was confirmed July 1, as Lake County News has reported.
Since then, two more dead birds – including a great blue heron – in Lake County have been confirmed to have the virus, along with a total of 13 mosquito samples, according to the case count.
State officials said the virus is now active in 34 of California's 58 counties, compared to 37 counties with the virus at this time last year.
West Nile virus is influenced by many factors, including climate, the number and types of birds and mosquitoes in an area and the level of WNV immunity in birds. West Nile 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 1 percent – can develop serious neurologic illnesses such as encephalitis or meningitis.
People 50 years of age and older and individuals with diabetes or hypertension have a higher chance of getting sick and are more likely to develop complications.
CDPH recommends that individuals protect against mosquito bites and WNV 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. Insect repellents should not be used on children under two months of age.
– DAWN AND DUSK: Mosquitoes usually 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 tight-fitting screens to keep out mosquitoes. Repair or replace screens that have 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.
California’s West Nile virus Web site includes the latest information on WNV activity in the state.
Californians are encouraged to report dead birds on the Web site or by calling toll-free 1-877-WNV-BIRD (968-2473).