West Nile Virus – Evidence in Alberta 2006
2006 Summary
Surveillance Report 2006
Human cases
There were 40 cases of WNv reported in Alberta in 2006. There was one case of West Nile Neurological Syndrome and 38 cases of West Nile Non-Neurological Syndrome. There was one asymptomatic case. For more information read the 2006 summary report.
| Health Region | WNv No Symptoms | WNv Non- Neurological Syndrome (formerly WNv fever) | WNv Neurological Syndrome |
| R1 -Chinook | 0 | 8 | 0 |
| R2 - Palliser | 1 | 27 | 0 |
| R3 - Calgary | 0 | 3 | 1 |
| * Total | 1 | 38 | 1 |
*Alberta total cases = 40
Birds tested
Alberta's West Nile virus bird surveillance program for 2006 was initiated on June 1. 92 birds were tested between June 1, 2006, and September 10, 2006, with 12 positive.
| Species | Tested this week | Positive this week | Tested June 19-Sept 10 | Total number positive |
| Blue Jay | 0 | 0 | 2 | 1 |
| Crow | 0 | 0 | 47 | 9 |
| Magpie | 0 | 0 | 40 | 2 |
| Raven | 0 | 0 | 3 | 0 |
| Total | 0 | 0 | 92 | 12 |
| Species | Location | Natural Region | Date Confirmed 2006 | Overall Species Counts |
| American Crow |
Brooks | Grassland | Jul 28 | 1 Crow |
| American Crow |
Lethbridge | Grassland | Aug 9 | 1 Crow |
| American Crow |
Calgary | Parkland | Aug 17 | 1 Crow |
| American Crow |
Medicine Hat | Grassland | Aug 18 | 1 Crow |
| American Crow |
Medicine Hat | Grassland | Aug 18 | 1 Crow |
| Blue Jay | Medicine Hat | Grassland | Aug 18 | 1 Blue Jay |
| American Crow | Oven | Grassland | Aug 23 | 1 Crow |
| American Crow | Lethbridge | Grassland | Aug 25 | 1 Crow |
| Black-Billed Magpie | Cardston | Grassland | Aug 31 | 1 Magpie |
| Black-Billed Magpie | Medicine Hat | Grassland | Sep 1 | 1 Magpie |
| American Crow | Medicine Hat | Grassland | Sep 1 | 2 Crows |
Further information is available at Alberta Sustainable Resource Development website.
Horses tested
For more information on horse testing, see Alberta Agriculture and Foods website.
Mosquito Pools
Mosquito surveillance was initiated on Tuesday, June 20, 2006. 818 mosquito pools were tested between June 20, 2006, and September 9, 2006, with 117 positive.
| Week | Number of Pools Tested | Number Laboratory Confirmed Positive | Location |
| Jun 18 - 24 | 14 | 0 | |
| Jun 25-Jul 1 | 29 | 0 | |
| Jul 2-8 | 38 | 0 | |
| Jul 9-15 | 51 | 0 | |
| Jul 16-22 | 82 | 2 | Tilley, Medicine Hat |
| Jul 23-29 | 108 | 10 | Rolling Hills (6)Burdett (2) Medicine Hat (2) |
| Jul 30-Aug 5 | 115 | 12 | Foremost (3) Magrath (1) Coaldale (1) Brooks (2) Medicine Hat (1) Rolling Hills (4) |
| Aug 6-12 | 160 | 43 | Hanna (2) Strathmore(2) Vulcan (2) Claresholm (2) Milk River (1) Taber (1) Picture Butte (2) Coaldale (1) Brooks (2) Tilley (6) Rolling Hills (9) Oyen (1) Medicine Hat (4) Burdett (1) Foremost (5) Empress (2) |
| Aug 12-19 | 91 | 24 |
Vulcan (1) |
| Aug 20-26 | 89 | 19 |
Provost (1) |
| Aug 27-Sept 2 | 28 | 4 | Coaldale (1) Magrath (1) Brooks (1) Medicine Hat (1) |
| Sept 3-9 | 4 | 1 | Brooks (1) |
