- Author: Mackenzie Faith Patton
The invasive pest spotlight focuses on emerging or potential invasive pests in California. In this issue we are covering West Nile virus.
West Nile Virus Facts
West Nile virus disease was first reported in California in 2003 and has become the most common and serious vector-borne disease in California. With the exceptionally wet weather in 2023, reported cases of this mosquito-borne virus doubled compared to the previous year.
West Nile virus is spread by mosquitoes in the genus Culex. Usually, the virus passes between mosquitoes and birds, but mosquitoes can also transmit the virus to humans, horses, and other domestic animals.
Because mosquitoes can get the virus...
/h2>As summer quickly approaches and we find ourselves getting outside a bit more, remember to take care to protect yourself from mosquitoes.
According to Gary Goodman, District Manager of Sacramento Yolo Mosquito and Vector control, many residents are anxious and excited to get outside and enjoy the warm weather so it's important to protect yourself from mosquito bites by wearing a good mosquito repellent.
The Centers for Disease Control and Prevention (CDC) recommend using an insect repellent that contains the active ingredients DEET, Picaridin, IR3535 or the plant-based oil of lemon eucalyptus. Aside from personal protection against mosquito bites, it's important to ensure mosquitoes are not breeding at home. Drain...
With recent rains in many parts of California and the weather warming up, it's time once again to think about mosquito prevention and control. Even though we are all mostly indoors right now, there are things we can do to reduce mosquito-breeding areas in our backyards, gardens, patios, and other areas that hold standing water. UC IPM has information to help.
In the newly revised Pest Notes: Mosquitoes, you'll find general mosquito prevention tips as well as information on the most recent mosquitoes to become established in California: species in the...
Summer is all about being outdoors and enjoying camping, swimming, playing, and other activities with family and friends. But it's a real drag when pests such as ants, yellowjackets, or mosquitoes ruin the fun.
When you have a pest problem and want to find a solution quickly, it can be helpful to watch a short video that tells you what you can do. In UC IPM's Video Library, you will find over 30 helpful videos on these and other common pests that are active in summer or other times of the year.
1. Ants: Using a Sticky Barrier to Prevent Ants on Trees and Shrubs
Warming temperatures combined with late spring rains create ideal conditions for mosquitoes to breed, including the mosquitoes that transmit West Nile Virus. To help spread the message about mosquito prevention, April 15-21, 2018 has been designated as Mosquito and West Nile Virus Awareness Week.
West Nile Virus is spread by mosquitoes that get the virus from infected birds. Mosquitoes infected with the virus can transfer it to humans and other animals. Humans infected with the virus may become very ill. The disease usually is most serious in children, people with weakened immune systems, and the elderly. In 2017, California reported 553 human cases of West Nile Virus, which included 44...