Los Angeles County reports 100 West Nile virus cases, most in nearly a decade

Key Points:

• Los Angeles County has reported 100 cases of West Nile virus so far this year, marking the highest early-season count in nearly a decade, with five deaths and most patients experiencing severe neurological illness requiring hospitalization.
• The last time the county recorded at least 100 cases was in 2017, when 268 cases were reported throughout the entire mosquito season.
• Health officials emphasize the importance of protective measures such as using insect repellent, eliminating standing water, and ensuring window and door screens are intact to reduce mosquito exposure during the peak season from June to November.
• West Nile virus is transmitted by mosquitoes that have bitten infected birds, with most infected individuals showing no symptoms, though about 20% develop mild illness and approximately 1 in 150 suffer severe neurological symptoms, especially those over 50 or with underlying health conditions.
• There is currently no vaccine or specific treatment for West Nile virus, prompting ongoing efforts in mosquito control, surveillance, and public education to mitigate the outbreak.