|CA Dept. of Public Health||UC Davis Arbovirus Research and Training||Mosquito and Vector Control Assoc. of CA|
Case Counts by County
2017 | 2016 | 2015 | 2014
2013 | 2012 | 2011
2010 | 2009 | 2008
West Nile Virus at Highest Level Ever in MosquitoesSep 3, 2014
FOR IMMEDIATE RELEASE
Significant increase in human cases
SACRAMENTO - Dr. Ron Chapman, director of the California Department of Public Health (CDPH) and state health officer, is reminding Californians to remain vigilant against the threat of West Nile virus.
"The proportion of mosquitoes infected with West Nile virus is at the highest level ever detected in California," Chapman said. "Last week, 52 new human cases were reported to CDPH. 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 36 California counties. 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.
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 one 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:"
California's West Nile virus website includes the latest information on West Nile virus activity in the state. Californians are encouraged to report all dead birds on the website or by calling toll-free 1-877-WNV-BIRD (968-2473).
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Compared to previous year and previous five-year average to date