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Welcome to Pennsylvania's West Nile Virus Control Program!
Protecting Public Health Since 2000

   In 2000, West Nile virus appeared for the first time in Pennsylvania in birds, mosquitoes and a horse. To combat the spread of West Nile virus, which is transmitted by mosquitoes, Pennsylvania has developed a comprehensive network. This network, which covers 40 counties, includes trapping mosquitoes, collecting dead birds and monitoring horses, people and, in past years, sentinel chickens. Please explore our site to find out more about how you can help, to learn about West Nile virus or the latest surveillance update from your area.



2014 West Nile Human Summary Data
CountyNo.
Adams1
Allegheny1
Bedford1
Bucks3
Dauphin1
Montgomery1
Philadelphia4
Total12
GenderNo.
Male8
Female4
Total12
Age DistributionNo.
<180
18-392
40-592
60-693
70-792
>803
Total12
SyndromeNo.
West Nile Fever1
Encephalitis/Meningitis11
Total12

Bti for Home Use

State DEP and county mosquito control professionals have been using Bti, a naturally occurring bacteria, to kill mosquito larvae for years. This material is now becoming widely available for you to buy and use yourself at home.

Bti can be purchased in small, donut-shaped form, often called "mosquito dunks", which are useful in small areas of standing water, such as a birdbath or small puddle of water that may gather in a low spot on your property. A granular form of Bti is available, and effective for larger areas, such as backyard ponds.

Bti can be purchased in many lawn and garden, outdoor supply, and home improvement stores. The great thing about this bacteria is that it kills only mosquito and black fly larvae. It is not harmful to people, pets, aquatic life (such as fish) or plants.

The best way to control mosquitoes is still to get rid of standing water on your property. And, make sure you follow all label instructions carefully if you use Bti at home.

Mosquito Complaint & Bird Reporting The ability to report mosquito complaints and dead birds online will return in April
The mosquito complaint and dead bird reporting tools will be available again in April. Thank you for using these features during the past mosquito season!


Maps and Surveillance
Click Here for more Info on Surveillance

The map above shows the current distribution of West Nile Virus in Pennsylvania. This map is based on surveillance results from the 2013 surveillance season. Click the map for the latest statewide surveillance information.

Today's Positives
Today's Human Positives
County Number Positives
There are no new human cases to report today.
12/15/2014

Click Here for All Human Cases

Today's Positives (updated daily at 2:00PM)
County Mosquitoes Birds Vet
 *Refresh your browser for the latest information. 12/15/2014

The Today's Positives section is updated daily at 2:00PM. Positives from the previous day are removed at 2:00PM. Please note that mosquito samples may consist of 1 or more mosquitoes of 1 or more species.


Upcoming Spray Events
Upcoming Spray Events (updated daily at 2:00PM)
County Municipality Spray Date

Additional information regarding upcoming mosquito spray events can be found by clicking on the link below:


News Releases
Please feel free to browse all of our past News Releases by clicking on the link below:

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A multi-agency cooperative effort between:

PA Department of Environmental Protection PA Department of Health PA Department of Agriculture