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Surveillance Data and Maps


Select a county below to view surveillance information for that county.

Map of Surveillance Results Adams County - Blue/Virus Has Not Yet Been Found Allegheny County - Blue/Virus Has Not Yet Been Found Armstrong County - Blue/Virus Has Not Yet Been Found Beaver County - Blue/Virus Has Not Yet Been Found Bedford County - Blue/Virus Has Not Yet Been Found Berks County - Blue/Virus Has Not Yet Been Found Blair County - Blue/Virus Has Not Yet Been Found Bradford County - Blue/Virus Has Not Yet Been Found Bucks County - Blue/Virus Has Not Yet Been Found Butler County - Blue/Virus Has Not Yet Been Found Cambria County - Blue/Virus Has Not Yet Been Found Cameron County - Blue/Virus Has Not Yet Been Found Carbon County - Blue/Virus Has Not Yet Been Found Centre County - Red/Virus Present Chester County - Blue/Virus Has Not Yet Been Found Clarion County - Blue/Virus Has Not Yet Been Found Clearfield County - Blue/Virus Has Not Yet Been Found Clinton County - Blue/Virus Has Not Yet Been Found Columbia County - Blue/Virus Has Not Yet Been Found Crawford County - Blue/Virus Has Not Yet Been Found Cumberland County - Blue/Virus Has Not Yet Been Found Dauphin County - Blue/Virus Has Not Yet Been Found Delaware County - Blue/Virus Has Not Yet Been Found Elk County - Blue/Virus Has Not Yet Been Found Erie County - Blue/Virus Has Not Yet Been Found Fayette County - Blue/Virus Has Not Yet Been Found Forest County - Blue/Virus Has Not Yet Been Found Franklin County - Red/Virus Present Fulton County - Blue/Virus Has Not Yet Been Found Greene County - Blue/Virus Has Not Yet Been Found Huntingdon County - Blue/Virus Has Not Yet Been Found Indiana County - Blue/Virus Has Not Yet Been Found Jefferson County - Blue/Virus Has Not Yet Been Found Juniata County - Blue/Virus Has Not Yet Been Found Lackawanna County - Blue/Virus Has Not Yet Been Found Lancaster County - Blue/Virus Has Not Yet Been Found Lawrence County - Blue/Virus Has Not Yet Been Found Lebanon County - Blue/Virus Has Not Yet Been Found Lehigh County - Blue/Virus Has Not Yet Been Found Luzerne County - Blue/Virus Has Not Yet Been Found Lycoming County - Blue/Virus Has Not Yet Been Found McKean County - Blue/Virus Has Not Yet Been Found Mercer County - Blue/Virus Has Not Yet Been Found Mifflin County - Blue/Virus Has Not Yet Been Found Monroe County - Blue/Virus Has Not Yet Been Found Montgomery County - Blue/Virus Has Not Yet Been Found Montour County - Blue/Virus Has Not Yet Been Found Northampton County - Blue/Virus Has Not Yet Been Found Northumberland County - Blue/Virus Has Not Yet Been Found Perry County - Blue/Virus Has Not Yet Been Found Philadelphia County - Blue/Virus Has Not Yet Been Found Pike County - Blue/Virus Has Not Yet Been Found Potter County - Blue/Virus Has Not Yet Been Found Schuylkill County - Blue/Virus Has Not Yet Been Found Snyder County - Blue/Virus Has Not Yet Been Found Somerset County - Blue/Virus Has Not Yet Been Found Sullivan County - Blue/Virus Has Not Yet Been Found Susquehanna County - Blue/Virus Has Not Yet Been Found Tioga County - Blue/Virus Has Not Yet Been Found Union County - Blue/Virus Has Not Yet Been Found Venango County - Blue/Virus Has Not Yet Been Found Warren County - Blue/Virus Has Not Yet Been Found Washington County - Blue/Virus Has Not Yet Been Found Wayne County - Blue/Virus Has Not Yet Been Found Westmoreland County - Blue/Virus Has Not Yet Been Found Wyoming County - Blue/Virus Has Not Yet Been Found York County - Blue/Virus Has Not Yet Been Found Counties in Blue are counties in which virus has not yet been found during the year.  Move your cursor over individual counties to determine county surveillance status. Counties in Red are counties in which virus has been found during the year.  Move your cursor over individual counties to determine county surveillance status.

Red/Blue Map Legend - Red = Virus Found, Blue = No Virus Found

Tabular view of PA county surveillance status for 2016

Pennsylvania Surveillance

Surveillance Type Number Collected Number Tested Number Positives
Humans N/A N/A 0*
Human Blood Donors N/A N/A 0
Dead Birds 6 5 2
Mosquito Samples 3748 220 0
Mosquito Pools N/A 343 0
Veterinary Samples N/A N/A 0*
*This number may include positive cases for pathogens other than West Nile Virus. For more information, please see the corresponding Human Cases or Veterinary Positives tables below.


View:  County Positives Summary  |  Human Cases  |  Mosquito Positives  |  Avian Positives  |  Veterinary Positives

County Positives Summary

CountyTotal
Positives
Human
Cases
Avian SamplesMosquito SamplesVeterinary
Positives
CollectedTestedPositiveCollectedTestedPositive
Adams000002584600
Allegheny0000053000
Armstrong000000000
Beaver0000074100
Bedford000000000
Berks000004201200
Blair00220164600
Bradford000000000
Bucks00000229800
Butler000009000
Cambria0000084300
Cameron000000000
Carbon000000000
Centre10111112500
Chester0000066200
Clarion000008000
Clearfield0000012300
Clinton000003100
Columbia000006100
Crawford000000000
Cumberland000002432000
Dauphin00100124600
Delaware000003181800
Elk000000000
Erie000000000
Fayette0000058700
Forest000000000
Franklin10111111600
Fulton000000000
Greene000000000
Huntingdon0000010100
Indiana000001000
Jefferson000000000
Juniata000004100
Lackawanna0000064100
Lancaster000001821000
Lawrence0000077100
Lebanon00000124600
Lehigh0000093600
Luzerne0000062300
Lycoming000008400
McKean000000000
Mercer000008000
Mifflin000006100
Monroe0000029600
Montgomery000001661100
Montour000000000
Northampton0000033000
Northumberland000008000
Perry0000016300
Philadelphia00000124100
Pike000000000
Potter000000000
Schuylkill000001000
Snyder000002000
Somerset000000000
Sullivan000000000
Susquehanna000001000
Tioga000000000
Union000002000
Venango000000000
Warren0000014000
Washington000001000
Wayne000000000
Westmoreland000000000
Wyoming000000000
York001103602000
TOTAL20652374822000
Positive Counties2
Counties with
Human Positives
0
Counties with
Dead Bird Positives
2
Counties with
Mosquito Positives
0
Counties with
Veterinary Positives
0

Human Positives Reported
Top

(Most recent cases reported at top of table)

Pathogen County Gender Date Reported Illness
Onset Date
Status
No confirmed human cases have been reported in 2016.

Mosquito Positives Collected
Top

Mosquito samples may consist of 1 or more mosquito pools with 1 or more species. The samples below are ordered by County, then by Recent Date.

County Municipality Date Species
No positive mosquito samples have been reported in 2016.

Avian Positives Collected
Top

County Municipality Date Collected Species
Franklin Orrstown Boro 5/17/2016 Turkey Vulture
Centre Worth Twp 5/2/2016 Red-tailed Hawk

Veterinary Positives Collected
Top

Pathogen County Municipality Date Collected Animal Type
No positive veterinary specimens have been reported in 2016.

Dead birds

When a dead bird is sighted, the information about that bird is recorded. If the bird meets the criteria for testing, it is collected and sent for testing. Samples are from each bird are tested for WNV. This table records the surveillance effort in Pennsylvania by whole birds,rather than partial tissues from the birds.

Mosquitoes

All mosquitoes collected in one effort create a sample of mosquitoes. This sample is sent to the lab for identification. A sample can include either larval or adult mosquitoes. Only adult mosquitoes are tested for WNV. All mosquitoes are identified, and adults are divided into subsamples by species for testing. This table records the surveillance effort in Pennsylvania by samples, rather than subsamples of mosquitoes.

Veterinary Samples

Diagnostic blood samples from equine and other animals submitted by veterinarians across the state will be tested for WNV. Please note that since it is impossible to differentiate between naturally infected horses and vaccinated horses, it is important that the vaccination history of any horse that is being tested be provided to the laboratory. A reporting form is available for submission with samples from the Pennsylvania Veterinary Laboratory.


A multi-agency cooperative effort between:

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

Surveillance Results:

  2000  |  2001  |  2002  |  2003  
  2004  |  2005  |  2006  |  2007  
  2008  |  2009  |  2010  |  2011  
  2012  |  2013  |  2014  |  2015  
  2016  |