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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 - Red/Virus Present Blair County - Red/Virus Present Bradford County - Blue/Virus Has Not Yet Been Found Bucks County - Red/Virus Present 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 - Red/Virus Present 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 - Red/Virus Present 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 - Red/Virus Present 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 10 7 2
Mosquito Samples 9204 1197 7
Mosquito Pools N/A 2163 7
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
Adams0000060814200
Allegheny000001822600
Armstrong000001000
Beaver000002461800
Bedford000000000
Berks100007843310
Blair102202964610
Bradford000000000
Bucks100005024810
Butler0000019000
Cambria000001952000
Cameron000000000
Carbon000000000
Centre103212082500
Chester000003377100
Clarion0000016300
Clearfield0011036900
Clinton000009300
Columbia0000019800
Crawford000008000
Cumberland100004657610
Dauphin001003053400
Delaware000006679900
Elk000009000
Erie0000046000
Fayette000001742300
Forest000001100
Franklin101113073800
Fulton000000000
Greene0000020700
Huntingdon0000010100
Indiana000003000
Jefferson000009100
Juniata000004100
Lackawanna00000102700
Lancaster101004263810
Lawrence00000220600
Lebanon000002832800
Lehigh000002614600
Luzerne000001702100
Lycoming0000033900
McKean000009000
Mercer0000014000
Mifflin000006100
Monroe000001152400
Montgomery200004347920
Montour000000000
Northampton0000085900
Northumberland0000017500
Perry0000032700
Philadelphia000005372100
Pike000000000
Potter000000000
Schuylkill00000633200
Snyder000004000
Somerset000000000
Sullivan000000000
Susquehanna000001000
Tioga000000000
Union000004100
Venango000006000
Warren0000022300
Washington000001000
Wayne000000000
Westmoreland000003000
Wyoming000000000
York0011087012700
TOTAL9010729204119770
Positive Counties8
Counties with
Human Positives
0
Counties with
Dead Bird Positives
2
Counties with
Mosquito Positives
6
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
Berks County Mosquito Samples
Berks Wyomissing Boro 6/16/2016 Culex restuans
Blair County Mosquito Samples
Blair Altoona City 5/24/2016 Culex restuans
Bucks County Mosquito Samples
Bucks Buckingham Twp 6/14/2016 Culex restuans
Cumberland County Mosquito Samples
Cumberland Camp Hill Boro 6/1/2016 Culex restuans
Lancaster County Mosquito Samples
Lancaster East Cocalico Twp 6/17/2016 Culex restuans
Montgomery County Mosquito Samples
Montgomery Upper Merion Twp 6/15/2016 Culex restuans
Montgomery Upper Dublin Twp 6/14/2016 Culex restuans

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  |