Health officials have confirmed the first detection of West Nile virus (WNV) in Mercer County and in Erie County after mosquitoes collected in Mercer, Erie, Millcreek, and Harborcreek tested positive for the virus.
Additional mosquito monitoring will be conducted in the area where the infected samples were found. Depending on the number and species of mosquitoes detected, appropriate mosquito control measures may be implemented.
Officials stress that positive mosquito samples do not mean everyone is at risk, but they serve as an important reminder to take preventive measures.
Prevention tips include:
Use insect repellent containing DEET as directed.
Wear long-sleeved shirts and long pants when outdoors.
Stay indoors during peak mosquito activity when possible.
Ensure window and door screens are in good condition.
Use fans during outdoor gatherings, as mosquitoes are discouraged by strong airflow.
Mosquitoes lay eggs in standing water, making it important to remove potential breeding sites around homes and businesses.
Officials recommend:
Emptying birdbaths regularly.
Removing old tires, cans, and containers that collect water.
Clearing clogged gutters.
Drilling drainage holes in recycling containers.
Emptying water from boats, wheelbarrows, toys, trailers, and flowerpots.
Treating standing water with mosquito control products such as mosquito dunks when appropriate.
Preventing water from stagnating in ornamental ponds and other outdoor water features.
At this time, no human cases of West Nile virus have been reported. West Nile virus is spread through the bite of an infected mosquito. According to health officials, approximately 80% of people infected with WNV experience no symptoms at all.
Up to 20% of infected individuals may develop mild symptoms, including:
These symptoms can last from a few days to several weeks.
In rare cases, the virus can cause serious neurological illness. Approximately one in 150 infected people develops severe symptoms that may include:
Health officials note that neurological complications may be long-lasting, and about one out of every ten people who develop severe illness affecting the central nervous system dies.
While severe illness can occur at any age, individuals at greater risk include:
Adults over age 60
People with cancer
Individuals with diabetes
Those with hypertension or kidney disease
Organ transplant recipients
People with weakened immune systems
Anyone experiencing symptoms after a mosquito bite should contact their healthcare provider.
Officials stated that continued surveillance will help determine whether additional mosquito control efforts are needed in Mercer County, Erie County, and surrounding areas as the summer season continues. For more information about West Nile virus, visit the Centers for Disease Control and Prevention website.