Arboviruses:
WNV – West Nile Virus
EEE – Eastern Equine Encephalitis
LAC – Lacrosse Encephalitis
DEN – Dengue Fever
SLE – St. Louis Encephalitis
POW – Powassan Virus
CHIK – Chikungunya Virus
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 |
Imported |
Alexandria City |
WNV |
0 |
Donor-1* |
|
|
|
|
Arlington County |
WNV |
1 |
Probable |
8/30/2011 |
8/30/2011 |
|
|
Augusta County |
WNV |
1 |
Probable |
8/3/2011 |
8/3/2011 |
|
|
Dinwiddie County |
WNV |
0 |
Donor-1* |
|
|
|
|
Fairfax County |
WNV |
1 |
Probable-1 Donor-1* |
8/31/2011 |
8/31/2011 |
|
|
Henrico County |
WNV |
0 |
Donor-1* |
|
|
|
|
Frederick County |
WNV |
0 |
Donor-1* |
|
|
|
|
Prince William County |
WNV |
1 |
Confirmed |
8/18/2011 |
8/18/2011 |
|
|
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 |
|
|
Rockingham County |
WNV |
1 |
Probable-1 Donor-3* |
9/2/2011 |
9/2/2011 |
1 |
|
Virginia Beach City |
WNV |
0 |
Donor-1* |
|
|
|
|
|
Total Cases WNV |
9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Wise County |
LAC |
1 |
Probable |
10/29/2011 |
10/29/2011 |
|
|
|
|
|
|
|
|
|
|
Alexandria City |
DEN |
1 |
Probable |
7/19/2011 |
7/19/2011 |
|
Grenada, St. Lucia |
Arlington County |
DEN |
1 |
Probable |
1/6/2011 |
1/6/2011 |
|
Bolivia |
Fairfax County |
DEN |
6 |
Confirmed-1 Probable-5 |
3/26/2011 |
8/24/2011 |
|
Trinidad |
|
Total Cases DEN |
8 |
|
|
|
|
|
*Nine blood donors tested positive for West Nile Virus in 2011, but none had illness symptoms and none were counted as probable or confirmed cases.
Equines and Other Mammals- Arbovirus Cases in Virginia (WNV and EEE) for 2011
Location by County/City or Health District |
Arbovirus |
Species |
Number Positive |
Recovered/Recovering/ Euthanized/Died |
Illness Onset Date of First Animal |
Illness Onset Date of Last Animal |
Clarke County |
WNV |
Equine |
1 |
Euthanized |
8/30/2011 |
8/30/2011 |
Arboviral Infections in Sentinel Chickens in Virginia for 2011; samples tested for WNV and EEE
Location by County/City or Health District |
Total Positive Chickens |
Total Positive |
Total Positive Chickens WNV |
Total Positive Flocks WNV |
Date First Sample Collected |
Date Last Sample Collected |
Date First Sample Collected |
Date Last Sample Collected |
Chesapeake |
2 |
1 |
|
|
8/22/2011 |
9/19/2011 |
|
|
Norfolk |
|
|
1 |
1 |
|
|
7/18/2011 |
7/18/2011 |
Suffolk |
3 |
2 |
|
|
7/18/2011 |
8/29/2011 |
|
|
Virginia Beach |
4 |
3 |
3 |
3 |
8/15/2011 |
8/26/2011 |
8/8/2011 |
10/10/2011 |
|
|
|
|
|
|
|
|
|
Other Animals- West Nile Virus Cases in Virginia for 2011
Location by County/City or Health District |
Arbovirus |
Species |
Number Positive |
Recovered/Recovering/ Euthanized/Died |
Illness Onset Date of First Animal |
Illness Onset Date of Last Animal |
None Reported |
|
|
|
|
|
|
Arboviral Infections in Mosquitoes in Virginia, 2011; pooled mosquitoes tested for WNV and/or EEE
Location by County/City or Health District |
Arbovirus |
Arbovirus |
Mosquito Species |
EEE |
EEE |
WNV |
WNV |
Alexandria City |
|
23 |
Cx. pipiens |
|
|
7/11/2011 |
9/6/2011 |
|
12 |
Cx.pipiens/restuans |
|
|
8/1/2011 |
9/12/2011 |
|
Fairfax County |
|
2 |
Cx. erraticus |
|
|
8/2/2011 |
8/2/2011 |
|
114 |
Cx.pipiens/restuans |
|
|
7/6/2011 |
10/11/2011 |
|
|
10 |
Cx. species |
|
|
7/19/2011 |
10/22/2011 |
|
Henrico County |
|
2 |
Ae. albopictus |
|
|
8/9/2011 |
9/15/2011 |
|
25 |
Cx.pipiens/restuans |
|
|
7/13/2011 |
10/5/2011 |
|
Prince William County |
|
12 |
Cx.pipiens/restuans |
|
|
7/8/2011 |
9/15/2011 |
Suffolk |
1 |
|
Cs. melanura |
10/28/2011 |
10/28/2011 |
|
|
Virginia Beach |
|
8 |
Cx.pipiens/restuans |
|
|
6/22/2011 |
9/13/2011 |
Total Positives |
1 |
208 |
|
|
|
|
|