4th West Nile Case Reported in Dallas

The Dallas County Health and Human Services (DCHHS) reported the third and fourth human cases of West Nile Virus (WNV) infection during 2017.

In 2016, Texas reported 370 human cases of West Nile Virus, including 18 deaths.

A 2016 study found deaths caused by WNV occur not just from the immediate infection, but also years later. In about 1% of infections, the virus can affect the nervous system, causing confusion, tremors, convulsions, paralysis, coma, and even death. During this study’s 10-year period, the death rate from WNV was 13%.

“Our mosquito surveillance program and the county and municipal abatement teams are taking appropriate actions to ensure the safety of our residents. However, it is important for residents to take the necessary precautions,” said Zachary Thompson, DCHHS director.

According to DCHHS, the best way to avoid exposure to the West Nile Virus is to avoid mosquito bites.

Most people (80%) who get infected with WNV do not get sick.

But about 20% will have symptoms that include headache, fever, muscle and joint aches, nausea, and fatigue.

The DCHHS says people should use the 4Ds to reduce their risk:

• DEET All Day, Every Day: Whenever you’re outside, use insect repellents that contain DEET or other EPA approved repellents and follow instructions.
• Dress: Wear long, loose, and light-colored clothing outside.
• Drain: Drain or treat all standing water in and around your home or workplace.
• Dusk & Dawn: Limit outdoor activities during dusk and dawn when mosquitoes are most active.

“Since there is no vaccine or specific antiviral treatments for WNV infection, residents should adhere to preventive measures to protect themselves and their loved ones,” said Dr. Christopher Perkins, DCHHS medical director.

“Diseases like Zika and West Nile remain threats in Texas, and we need everyone to do their part to protect themselves, their families and their communities,” said DSHS Commissioner Dr. John Hellerstedt.

According to the Centers for Disease Control and Prevention, there is a very low risk that a woman who is infected with WNV while pregnant will transmit the virus to her fetus or newborn. Only a few cases of West Nile virus in newborns have been reported.

More information on mosquito prevention can be found here.