Arbovirus Test Results for Virginia, 2009
      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 2009 (updated Nov 8, 2010)
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
Rockingham WNV 1 Confirmed 9/18/09 9/18/09
Madison WNV 1 Confirmed 8/21/09 8/21/09
Fairfax WNV 1 Confirmed 9/9/09 9/9/09
Alexandria WNV 1 Confirmed 8/14/09 8/14/10
Manassas Park City WNV 1 Confirmed 8/28/09 8/28/09
Richmond City CHIK 1 Confirmed 7/11/09 7/11/09
Wise LAC 1 Confirmed 9/4/09 9/4/09
Fairfax POW 1 Confirmed 11/23/09 11/23/09
Wild and Captive Birds - Arbovirus Cases in Virginia for 2009 (updated Mar 8, 2010)
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
Chesapeake EEE Emu 1 Died 7/25/2009 7/25/2009
Norfolk EEE Fairy Bluebird 1 Died 8/3/2009 8/3/2009
 Wild birds will not be collected or tested for West Nile virus in 2009
Equines and Other Mammals- Arbovirus Cases in Virginia (WNV and EEE) for 2009 (updated Mar 8, 2010)
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
Chesapeake EEE Horse 3 Euthanized 7/2/09 7/31/09
Chesapeake EEE Goat 1 Euthanized 7/22/09 7/22/09
Suffolk EEE Horse 3 Euthanized 7/27/09 9/26/09
Prince George EEE Horse 1 Euthanized 8/4/09 8/4/09
Southampton EEE Horse 1 Died 8/1/09 8/1/09
Surry EEE Alpaca 1 Recovering 7/24/09 7/24/09
New Kent EEE Horse 1 Euthanized 9/7/09 9/7/09
Pittsylvania WNV Horse 1 Euthanized 8/17/09 8/17/09
Augusta WNV Horse 1 Recovering 9/3/09 9/3/09
New Kent WNV Horse 1 Euthanized 9/12/09 9/12/09
Mosquito Pools - Arbovirus Cases in Virginia (WNV and EEE) for 2009 (updated Mar 8, 2010)
Location Collected by County or City Arbovirus Positive Pools Mosquito Species Date First Pool Collected Date Last Pool Collected
Alexandria WNV 1 Cx. pip./res. 8/4/09 8/4/09
Chesapeake WNV 3 Cs. mel. 8/6/09 10/6/09
Fairfax Co.  WNV 1 Ae. albo. 9/3/09 9/3/09
Fairfax Co.  WNV 84 Cx. pip./res. 6/23/09 9/24/09
Fairfax Co.  WNV 3 Cx. sp. 7/29/09 8/5/09
Fairfax Co.  WNV 1 Oc. tris. 7/9/09 7/9/09
Loudoun Co. WNV 12 Cx. pip./res. 8/11/09 9/8/09
Prince William Co. WNV 3 Cx. pip./res. 9/11/09 9/22/09
Suffolk WNV 2 Cs. mel. 8/18/09 9/1/09
Suffolk WNV 4 Cx. pip./res. 8/4/09 9/23/09
VA Beach WNV 5 Cx. pip./res. 8/3/09 8/18/09
Total WNV Positive Mosquito Pools 119
Chesapeake EEE 49 Cs. mel. 6/25/09 9/29/09
Chesapeake EEE 1 Oc. cana. 8/4/09 8/4/09
Newport News EEE 1 Cs. mel. 8/12/09 8/12/09
Norfolk EEE 1 Cs. mel. 7/2/09 7/2/09
Portsmouth EEE 1 Cs. mel. 7/21/09 7/21/09
Suffolk EEE 80 Cs. mel. 6/16/09 9/29/09
Suffolk EEE 1 Cx. pip./res. 7/16/09 7/16/09
Suffolk EEE 1 Cx. sal. 6/25/09 6/25/09
VA Beach EEE 6 Cs. mel. 7/20/09 7/28/09
Total EEE Positive Mosquito Pools 141
Sentinel Chicken - Arbovirus Cases in Virginia (WNV and EEE) for 2009 (updated Mar 8, 2010)
Location Collected by County or City Arbovirus Total Positive Flocks Total Positive Chickens Date First Collected Date Last Collected
Chesapeake EEE 11 29 6/29/09 8/24/09
Hampton EEE 3 3 7/6/09 7/20/09
Norfolk EEE 2 3 7/13/09 8/24/09
Suffolk EEE 8 14 6/22/09 8/24/09
Virginia Beach EEE 5 13 6/1/09 7/13/09
Suffolk WNV 2 3 7/20/09 7/20/09
Chesapeake WNV 7 11 8/17/09 8/24/09
Virginia Beach WNV 1 1 10/5/09 10/5/09
Other Animals - West Nile Virus Cases in Virginia for 2009 (updated Mar 8, 2010)
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