First Dead Birds and Mosquito Samples Test Positive for 2013 West Nile Virus Season

June 5, 2013


Elk GroveCalif. The Sacramento-Yolo Mosquito and Vector Control District  announces that two birds and two mosquito samples which were tested at the Sacramento County Public Health Lab facility, are positive for West Nile virus. The birds and mosquito samples, which were found in widespread areas throughout Sacramento County are the first signs of WNV activity for 2013. “Finding the first positive birds is always significant because it provides an early warning sign for the disease,” said David Brown, District Manager.  “The positive mosquito samples confirm the presence of the virus and help us focus our control efforts” added Brown. While this is the first indication of the virus within the District area, other counties throughout the state have already seen activity.
The public is encouraged to report dead birds by calling the California Department of Public Health hotline at 877-WNV-BIRD (877-968-2473).  Some species of birds such as crows, jays and magpies are very susceptible to the virus and are more likely to die from the infection. Though not all birds that are reported will be picked up and tested, the reports provide valuable information and assist with mosquito surveillance and control efforts that help protect public health.
In response to the detection of WNV activity, the District will increase its mosquito trapping and surveillance in the area to find sources where mosquitoes may be breeding.
In 2012, 20 deaths and 479 human WNV cases were reported in California.
To see a map of these first WNV findings and current information about District activities, please visit Residents may also subscribe to mailing lists to receive email notifications for upcoming mosquito treatments by zip code. To sign up, go to Spray Notifications on the website.
2013 West Nile virus activity update:
Sacramento County:  2 dead birds and 2 mosquito samples have tested positive for West Nile virus to date. 1 human case has been reported by the California Department of Public Health.
Yolo County:  No activity has been registered so far.

Contact:  Luz Maria Rodriguez, Public Information Officer
Office:  916.405.2082 | Cell:  916.416.6337
Practice the District D’s of Mosquito Prevention: 
DRAIN standing water that may produce mosquitoes. 
DAWN and DUSK are times to avoid being outdoors.   
DRESS appropriately be wearing long sleeves and pants when outside. 
DEFEND yourself by using an effective insect repellent.  Make sure to follow label directions! 
DOOR and window screens should be in good working condition.
DISTRICT personnel are also available to address any mosquito problems. Call us at 800-429-1022 or visit