A case of West Nile virus (WNV) has been confirmed in Riverside County, marking the first for the county and the third in California this year, according to county health officials. The patient, a minor, has been hospitalized with expectations set for a full recovery. CBS News Los Angeles reports that while the patient's condition and community of residence have not been disclosed, the wider public is being urged to take precautions against mosquitos, which are the primary vectors for the virus.
The virus is rarely life-threatening but can pose serious health risks, particularly to individuals in high-risk groups such as people over 60 or with certain chronic medical conditions. Dr. Geoffrey Leung, Riverside County Public Health Officer, stated in a press release, "The West Nile virus is spread by mosquito bites, and there are steps you can take to reduce your risk of being bitten." Among those steps are using EPA-registered insect repellents, dressing in long sleeves and pants during peak mosquito hours, and ensuring homes are fortified against the pests with proper screens.
Warnings from health officials strike particularly during mosquito season, spanning from May to October – a time when the insects are most active and capable of transmitting West Nile after feeding on infected birds. Riverside County had no reported cases of West Nile in 2022, though last year saw over 20 infections. Yet, there have been no fatalities tied to WNV in California this year, amidst a call for heightened vigilance.
West Nile virus can impart a range of symptoms from fever to headaches and body aches, although many who are infected may never show signs. About one in five infected individuals develop more severe symptoms, which can include vision loss or paralysis. "It's important to take precautions to prevent illness, especially for those who are high risk," noted Dr. Leung. Residents are encouraged to maintain properties by dumping and draining standing water, a common breeding ground for West Nile-carrying mosquitoes. For those experiencing WNV-like symptoms, health authorities recommend seeking prompt medical attention.
