Pennsylvania reports first human case of West Nile Virus this year

People urged to reduce exposure at dawn, dusk

By KEITH SCHWEIGERT
Copyright 2019 CNN

Mosquito.

HARRISBURG, Pa. - Pennsylvania's first probable human case of West Nile Virus (WNV) infection in 2019 has been detected in a Philadelphia resident, according to the state Departments of Health and Environmental Protection.

Samples are being sent to the Centers for Disease Control and Prevention for confirmatory testing, the departments said. Both departments strongly recommend that all residents minimize their exposure to mosquitoes.

"While we encourage Pennsylvanians to enjoy the outdoors, we also want them to take proper precautions from mosquitoes while outside," Secretary of Health Dr. Rachel Levine said. "With the first human case of West Nile Virus detected, we want people to protect themselves. Several simple steps can help protect yourself and loved ones from mosquito-related diseases."

Although mosquitoes can bite at any time of the day or night, the mosquitoes that transmit WNV are most active at dawn and dusk. When outdoors, people can avoid mosquito bites by properly and consistently using DEET-containing insect repellents and covering exposed skin with lightweight clothing. To keep mosquitoes from entering a home, make sure window and door screens are in place and are in good condition.

The Department of Environmental Protection (DEP) conducts regular surveillance and control to manage mosquito populations around the state. So far, DEP has detected WNV-infected mosquitoes in 32 counties.

"Today's announcement should be a reminder to all Pennsylvanians to use a personal insect repellent or stay indoors during dawn and dusk will help prevent exposure to the mosquitoes that can carry West Nile Virus," said DEP Secretary Patrick McDonnell. "DEP monitors mosquito populations across Pennsylvania for the presence of disease."

The mosquitoes that transmit WNV breed in areas with standing and stagnant water. These areas can include urban catch basins, clogged gutters, discarded tires, poorly maintained swimming pools, flower pots and other types of plastic containers.

Simple steps to eliminate standing water around the home include:

  • Remove tin cans, plastic containers, ceramic pots, discarded tires or any object that could collect standing water.
  • Drill holes in the bottom of recycling containers left outdoors.
  • Have roof gutters cleaned every year, particularly if the leaves from nearby trees have a tendency to clog the drains.
  • Turn over plastic wading pools and wheelbarrows when not in use.
  • Do not let water stagnate in birdbaths.
  • Aerate ornamental pools, or stock them with fish.
  • Clean and chlorinate swimming pools and remove standing water from pool covers.
  • Use landscaping to eliminate standing water that collects on your property.
  • Treat standing water that cannot be eliminated with Bti products which are sold at outdoor supply, home improvement and other stores.

Bti is a natural product that kills mosquito larvae, but is safe for people, pets, aquatic life and plants.

DEP will continue to survey affected communities to monitor mosquito activity and WNV.

DEP biologists have initiated a survey of the mosquito population to determine the risk for further human illness. If necessary, adult mosquito populations will be reduced.

These efforts will continue through October.

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