Significant Increase in West Nile Virus Activity in West Roseville

ROSEVILLE, Calif. – More mosquito samples and an additional dead bird in residential areas of west and northwest Roseville have turned up positive for West Nile virus.

To date, Placer County has seen increased West Nile activity in the mosquito and bird populations, as well as a recent human case. “Although we are not yet at epidemic levels of the virus according to the California Department of Public Health criteria, there clearly continues to be significant WNV in western Placer County” stated Joel Buettner, General Manager of the Placer Mosquito and Vector Control District. In response to the high levels of viral activity this year, the District has done more adult mosquito treatments this year than any other year since its establishment.

“West Nile virus season is far from over, even with the change in weather. It is important that residents continue to employ preventive measures against West Nile and other mosquito-borne diseases until the threat has subsided,” adds Buettner.

Due to this latest development, the District has scheduled ground-based adulticide applications for the early morning of September 10 in the following area of Roseville:

  • Western City limit of Roseville, between Pleasant Grove Blvd north to Blue Oaks drive, east to Woodcreek Oaks Blvd.

Since several factors affect spraying activities, such as weather and wind conditions, the District encourages Placer residents to check the District website at www.placermosquito.org for any changes to the spraying schedule.

With West Nile virus spreading to more populated areas of the county, the Placer Mosquito and Vector Control District advises the public to implement the 3 Ds of protection:

  • Drain any standing water that may produce mosquitoes.
  • Defend yourself and your home by using an effective insect repellent, dressing protectively when outside, and making sure screens on doors and windows are in good condition.
  • Contact the District for any additional help controlling mosquitoes around your home, or to report potential mosquito breeding sources, such as neglected swimming pools.

For more information, contact the Placer Mosquito and Vector Control District at (888) 768-2343 or www.placermosquito.org.

2010 Placer County West Nile virus activity update: 6 dead birds, 2 sentinel chickens, 33 mosquito samples, and 1 human have tested positive for West Nile Virus to date.

Contact: Ada Barros, Public Information Officer
E-mail: adab@placermosquito.org

Ground-Based Mosquito Treatment in Response to High Trap Counts in Northwest Roseville

ROSEVILLE, Calif. – Unusually high mosquito trap counts trigger localized treatment efforts in northwest Roseville.

“These high trap numbers reflect what our technicians and residents in the area have observed,” stated Joel Buettner, General Manager of the Placer Mosquito and Vector Control District. Residents and District staff have reported swarms of mosquitoes exhibiting aggressive biting behavior during the dayand evening.

Due to this latest development, the District has scheduled a ground-based adult mosquito treatment forthe early morning of August 19 in the following area of Roseville:

  • Amoruso Way north of West Sunset Blvd, including all side streets

Since several factors affect spraying activities, such as weather and wind conditions, the District encourages Placer residents to check the District website at www.placermosquito.org for any changes to the spraying schedule.

With West Nile virus spreading to more populated areas of the county, the Placer Mosquito and Vector Control District advises the public to implement the 3 Ds of protection:

  • Drain any standing water that may produce mosquitoes.
  • Defend yourself and your home by using an effective insect repellent, dressing protectively when outside, and making sure screens on doors and windows are in good condition.
  • Contact the District for any additional help controlling mosquitoes around your home, or to report potential mosquito breeding sources, such as neglected swimming pools.

For more information, Placer County residents may contact the Placer Mosquito and Vector Control District at (888) 768-2343 or www.placermosquito.org.

2010 Placer County West Nile virus activity update:
3 dead birds, O sentinel chickens, 18 mosquito samples have tested positive for West Nile Virus to date.

Contact: Ada Barros, Public Information Officer (916) 380-5480.

Mosquito Samples Suggest Increased West Nile Virus Activity in Residential Areas of West Roseville

ROSEVILLE, Calif. – Mosquito samples in residential areas of west and northwest Roseville are turning up positive for West Nile virus.

“Although the actual numbers of mosquitoes are low, infection rates among mosquitoes are high,” statedJoel Buettner, General Manager of the Placer Mosquito and Vector Control District. The District is concerned that this increases the risk for transmission of the virus to humans, since West Nile virus is now being found in areas with higher human population densities.

“In general, when we find disease, we increase surveillance by trapping adult mosquitoes and identifying additional breeding sources. When virus activity increases, we treat the affected area to control for both larval and adult mosquitoes,” adds Buettner.

Due to this latest development, the District has scheduled a ground-based adulticide application for the early morning of August 14 in the following areas of Roseville:

  • Blue Oaks Park and surrounding area:

South of Blue Oaks Blvd to Marblethorpe Drive, east of Sierra Pines Golf Course to Woodcreek Oaks Blvd and to the north edge of Woodcreek Golf Course.

  • Morgan Creek Golf Course and surrounding area:

South of Vineyard Road to PFE Road, between Walerga Road and Cook Riolo Road

Since several factors affect spraying activities, such as weather and wind conditions, the District encourages Placer residents to check the District website at www.placermosquito.org for any changes to the spraying schedule.

With West Nile virus spreading to more populated areas of the county, the Placer Mosquito and Vector Control District advises the public to implement the 3 Ds of protection:

  • Drain any standing water that may produce mosquitoes.
  • Defend yourself and your home by using an effective insect repellent, dressing protectively when outside, and making sure screens on doors and windows are in good condition.
  • Contact the District for any additional help controlling mosquitoes around your home, or to report potential mosquito breeding sources, such as neglected swimming pools.

For more information, Placer County residents may contact the Placer Mosquito and Vector Control District at (888) 768-2343 or www.placermosquito.org.

2010 Placer County West Nile virus activity update:
3 dead birds, O sentinel chickens, 18 mosquito samples have tested positive for West Nile Virus to date.

Contact: Ada Barros, Public Information Officer (916) 380-5480.

West Nile Virus Infected Mosquitoes Found in Roseville

ROSEVILLE, CA – Adult mosquitoes trapped in western Roseville have tested positive for West Nile Virus. To limit the spread of infected adult mosquitoes, the Placer Mosquito and Vector Control District will conduct truck-based mosquito adulticide applications beginning at midnight tonight and ending by 3:00am Saturday morning.

Applications will be targeted in the following areas West of Roseville:

  • The area north of PFE Road to Vineyard Road, and between Cook
  • Riolo Road and Walerga Road.
  • The development west of Walerga just north of Dry Creek.

Trucks will be applying Pyrenone® 25-5 (pyrethrin + PBO) by ultra low volume fog to target adult mosquitoes as they are flying.

For more information, including map of the treatment area and pesticide label please visit placermosquito.org or call the District at 1-888-768-2343 between 7:30am and 3:30 pm Monday through Friday.

The District makes every effort to notify the public of planned adulticide operations as soon as feasible. Unfortunately, sometimes there is need to respond quickly to mosquito populations, West Nile Virus activity, and weather conditions in order to best protect public health and maximize the efficacy of our treatments. In these cases, notification prior to treatment may be difficult.

The District urges the public to continue to protect themselves from mosquito bites especially during the hours around dawn and dusk. Wearing long sleeves and pants and using a mosquito repellent containing DEET, Picaridin, or Oil of Lemon Eucalyptus will help limit the risk of getting West Nile Virus.

The District also encourages the public to continue to report dead birds to the State Dead Bird Hotline at 1-877-968-2473 (1-877-WNV-BIRD).

Contact: Joel Buettner, General Manager (916) 380-5440.