Invasive Mosquito Found in Pleasanton After 10 Years

In the United States, specifically in Alameda County, a non-native mosquito species known as Aedes aegypti has been discovered in Pleasanton after a decade-long absence. This mosquito is notorious for its ability to transmit several serious diseases, including dengue, Zika, chikungunya, and yellow fever. The Alameda County Mosquito Abatement District reported the finding, which occurred in a neighborhood west of Amador Valley High School. The district is taking immediate action to prevent the mosquito from establishing a permanent presence in the area. Residents are being urged to inspect their properties for standing water, which serves as a breeding ground for these mosquitoes. Aedes aegypti is particularly aggressive, feeding primarily on humans and laying eggs in small water sources. The district plans to conduct door-to-door inspections and treatments of catch basins and storm drains to mitigate the risk of an outbreak. The presence of Aedes aegypti in the Bay Area is concerning, as it has been detected in four counties, including Contra Costa and Santa Clara. This invasive species poses a significant public health threat due to its daytime activity and aggressive biting behavior, which differs from native mosquito populations that are more active during cooler morning and evening hours. If Aedes aegypti becomes established in Alameda County, it could lead to increased health risks and a decline in the quality of life for residents. The district emphasizes the importance of preventive measures, including the use of EPA-registered insect repellents and maintaining proper home defenses against mosquito entry.