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Posted on: August 5, 2019

First Mosquitoes Test Positive for West Nile Virus


On Monday, August 5, the Orange County Mosquito and Vector Control District (OCMVCD) has confirmed the first mosquito sample to test positive for West Nile Virus in 2019. According to OCMVCD, the first mosquito sample to test positive for West Nile Virus (WNV) was collected in the City of Orange at El Camino Real Park on July 30, 2019.  Fortunately, there are no confirmed cases of human infections in Orange County at this time.

OCMVCD Press Release Map 8.5.2019

"The increased temperatures and humidity creates an ideal environment for mosquitoes to breed, it is critical that residents take the necessary steps to eliminate potential mosquito breeding sources and prevent mosquito bites," said Lora Young, OCMVCD's Director of Communications.

West Nile Virus is transmitted to humans via the bite of infected mosquitoes, which become infected when feeding on birds carrying the virus. Most individuals infected with WNV will not experience any illness. Others will have flu-like symptoms, such as fever, headache and body aches. In severe cases, people will need to be hospitalized, and in rare cases the disease can be fatal. Young children, the elderly, or individuals with lowered immune systems are at greater risk to experience severe symptoms when infected. 

Here are a few steps you can take to prevent mosquito bites:

  • Apply repellent to exposed skin before going outdoors
  • Close all unscreened doors & windows
  • Tip or toss containers filled with water (e.g. potted plant saucers)
  • Clean and scrub bird baths and pet water bowls weekly

Click here to read OCMVCD's press release.

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