First Case of West Nile Virus Confirmed in Yavapai County Featured

Terri Farneti September 30, 2021 94

This is the first positive case Yavapai County has experienced since 2012.

Big Idea

  • The first positive case of West Nile Virus in Yavapai County was reported this week 
  • YCCHS begins trapping mosquitoes each year until the end of October
  • 70% of the mosquitoes are in flood water and do not transmit diseases
  • Avoid bites and mosquito-proof your home
  • Read more…


“Mosquitoes are never going away, they are endemic to our ecosystem."


The first human West Nile Virus case was reported this week to the YCCHS Epidemiologist, Stephen Everett.  This is the first positive case the county has experienced since 2012. YCCHS begins trapping mosquitoes each year until the end of October.  70% of the mosquitoes the county has trapped have been flood water mosquitos due to the monsoons. These mosquitoes are not known to transmit diseases. 


The monsoon season is over, and many people are wishing the same could be true for mosquitoes. “Mosquitoes are never going away; they are endemic to our ecosystem. The best way to protect ourselves and our families is to do surveillance of your own yard for standing water and avoiding dawn and dusk hours of the day.  If you’re out during those times, wear long sleeves and pants and use mosquito repellent,” says Cecil Newell, YCCHS Section Manager Environmental Health.


How to Protect Yourself, Family and Pets


Avoid Mosquito Bites

  • Apply Insect Repellent when Outdoors. Use a repellent with an EPA-registered ingredient (DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), oil of lemon eucalyptus [p-methane 3, 8- diol (PMD)] or IR3535) according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30 percent or less on older children.
  • Be Aware of Peak Mosquito Hours. The hours from dusk to dawn are peak biting times for many mosquitoes. Consider rescheduling outdoor activities that occur during evening or early morning in areas of high risk.
  • Wearing long-sleeves, long pants, and socks when outdoors will help keep mosquitoes away from your skin.

Mosquito-Proof Your Home

  • Drain Standing Water. Mosquitoes lay their eggs in standing water. Limit the number of places around your home for mosquitoes to breed by either draining or discarding items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools and change the water in birdbaths frequently.
  • Install or Repair Screens. Keep mosquitoes outside by having tightly fitting screens on all your windows and doors.

Protect Your Animals

  • Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains.

If you live near any water sources in our county – and see an influx of mosquitos in the area, be assured the health department is on top of trapping in the area.


For information on the symptoms, diagnosis and treatment of West Nile virus, check out the CDC website. 




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Last modified on Thursday, 30 September 2021 02:00
Published in Azhealth.news

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