Arbovirus Test Results for Virginia, 2011 
      Arboviruses
WNV – West Nile Virus
LAC – La Crosse Encephalitis
EEE – Eastern Equine Encephalitis
SLE – St. Louis Encephalitis virus
POW - Powassan Virus 
CHIK - Chikungunya Virus
Humans - Arbovirus Cases in Virginia for 2011
 
Location by County/City or Health District Arbovirus Number of Cases Case Status Illness Onset Date of First Case Illness Onset Date of Most Recent Case Deaths  
Richmond City WNV 2 Confirmed 7/3/2011 8/13/2011
Roanoke City WNV 1 Confirmed 7/25/2011 7/25/2011
Roanoke County WNV 1 Confirmed 8/13/2011 8/13/2011
Augusta County WNV 1 Probable 8/3/2011 8/3/2011
Rockingham County WNV 1 Probable 9/2/2011 9/2/2011 1
Prince William County WNV 1 Confirmed 8/18/2011 8/18/2011
Fairfax County WNV 1 Probable 8/31/2011 8/31/2011
Arlington County WNV 1 Probable 8/30/2011 8/30/2011
Equines and Other Mammals- Arbovirus Cases in Virginia (WNV and EEE) for 2011
 
Location Collected by County or City Arbovirus Species Number Positive Recovered/ Recovering, Euthanized, or Died Illness Onset Date of First Animal Illness Onset Date of Last Animal  
Clarke County WNV Equine 1 Euthenized 30-Aug-11 30-Aug-11
Mosquito Pools - Arbovirus Cases in Virginia (WNV and EEE) for 2011 
 
Expr1 Expr2 Expr3 Expr4 MinOfCollection Date MaxOfCollection Date
Alexandria WNV 23 Cx. pip. 11-Jul-11 06-Sep-11
Alexandria WNV 12 Cx. pip./res. 01-Aug-11 12-Sep-11
Fairfax Co.  WNV 2 Cx. err. 02-Aug-11 02-Aug-11
Fairfax Co.  WNV 114 Cx. pip./res. 06-Jul-11 11-Oct-11
Fairfax Co.  WNV 10 Cx. sp. 19-Jul-11 22-Sep-11
Henrico Co. WNV 2 Ae. albo. 09-Aug-11 15-Sep-11
Henrico Co. WNV 25 Cx. pip./res. 13-Jul-11 05-Oct-11
Prince William Co. WNV 12 Cx. pip./res. 08-Jul-11 15-Sep-11
Virginia Beach WNV 8 Cx. pip./res. 22-Jun-11 13-Sep-11
Suffolk EEE 1 Cs. mel 28-Oct-11 28-Oct-11
Total 209
Sentinel Chicken - Arbovirus Cases in Virginia (WNV and EEE) for 2011
   
Location Collected by County or City Arbovirus Total Positive Flocks Total Positive Chickens Date First Collected Date Last Collected
Suffolk EEE 2 3 18-Jul-11 29-Aug-11
Virginia Beach EEE 3 4 15-Aug-11 26-Sep-11
Chesapeake EEE 1 2 22-Aug-11 19-Sep-11
Norfolk WNV 1 1 18-Jul-11 18-Jul-11
Virginia Beach
WNV 3 3 08-Aug-11 10-Oct-11
Other Animals - West Nile Virus Cases in Virginia for 2011
Location Collected by County or City Species Affected Recovered/ Recovering, Euthanized or Died Onset Date of First Case Onset Date of Last Case
None reported