Minnesota West Nile Virus Monitoring
Final Summary- 2003
Legend
Human cases
Kittson
2 horses
2 birds
Horses, asymptomatic horses,
other mammals, mosquito pools,
sentinel chickens, birds,
and/or human blood donors
Roseau
1 human
1 bird
No reported WNV activity
Lake of the Woods
Marshall
1 human
Koochiching
Pennington
1 bird
Beltrami
1 human
2 birds
Red Lake
Cook
Clearwater
Polk
1 human
Norman
1 human
Hubbard
2 horses
1 asymp.
horse
Becker
3 humans
1 horse
3 birds
Wilkin
2 humans
1 hn. bld. dnr.
Stevens
2 humans
2 birds
Douglas
2 humans
1 hm. bld. dnr.
1 horse
1 bird
Chippewa
1 human (death)
1 bird
Yellow Medicine
1 human 1 bird
Lincoln
3 humans
1 bird
Lyon
2 humans
1 hm. bld.
dnr.
2 birds
Murray
Pipestone
1 human
1 human
1 bird
20 mosq. pools
Rock
2 humans
1 bird
2 mosq.
pools
Nobles
1 human
2 birds
Aitkin
1 horse
Crow Wing
2 horses
2 birds
Todd
4 horses
2 asymp.
horses
1 bird
Morrison
1 horse
2 birds
Benton
2 humans
3 birds
Sherburne
3 humans
5 horses
3 birds
Meeker
4 humans
1 bird
Renville
5 humans
1 hm. bld. dnr.
2 birds
Redwood
2 humans
1 bird
6 mosq. pools
Isanti
1 human
4 horses
1 asypm.
horse
1 bird
Chisago
4 horses
4 birds
Wright
7 humans
4 birds
Sibley
1 hm. bld. dnr.
2 birds
Watonwan
1 human
1 horse
Martin
1 human
1 bird
Jackson
1 human
Type
Humans (4 deaths)
Human blood donors
Horses
Asymptomatic horses
Sentinel chickens
Other mammals
Mosquito pools
Birds
Anoka
1 human
1 horse
1 wolf
37 birds
Nicollet
Le Sueur
1 hm. bld.
dnr.
3 horses
1 bird
Rice
1 human
1 bird
Blue Earth
Waseca
5 humans
2 humans
1 hm. bld. dnr.
2 birds
1 bird
Faribault
2 humans
1 bird
Ramsey
5 humans
88 birds
1 dog
5 squirrels
Steele
1 bird
Freeborn
2 horses
1 bird
Goodhue
2 horses
1 bird
Scott
1 human
2 hn. bld. dnrs.
3 horses
4 sent. chickens
14 birds
Dakota
5 humans
2 hn. bld. dnr.
5 horses
28 birds
Wabasha
1 bird
Dodge
1 horse
1 bird
Fillmore
4 horses
Map Interpretation:
Geographic variation of WNV-infected
humans, horses, chickens, mosquitoes,
and birds reflect, in part, population density,
awareness of WNV, location of farms
and stables, location of mosquito traps,
and total number of birds submitted for
testing.
0
12.5
25
50
75
100
125
Carver
1 hm. bld. dnr.
1 horse
4 birds
Olmsted
2 humans (1 death)
2 horses
2 birds
Winona
1 horse
Mower
1 human
1 horse
3 birds
Cases
148
18
74
10
4
8
59
433
Washington
2 humans
7 horses
19 birds
1 mosq. pool
Hennepin
11 humans
2 horses
145 birds
14 mosq. pool
McLeod
4 humans
3 birds
Brown
2 humans
1 hm. bld. dnr.
Cottonwood
5 humans
Confirmed Findings
Pine
1 bird
Stearns
8 humans
1 horse
2 birds
Kandiyohi
9 humans
(1 death)
4 birds
Mille Lacs
1 human
1 bird
1 horse
3 asymp. horses
5 mosq. pools
Carlton
1 asymp. horse
1 mosq. pool
1 bird
Kanabec
Pope
3 humans
2 horses
1 dog
2 mosq. pools
Swift
1 human
1 hm. bld. dnr.
1 bird
Lac Qui Parle
2 humans
2 hm. bld. dnrs.
7 birds
Cass
1 horse
1 bird
Wadena
1 human
3 horses
1 asymp.
horse
Otter Tail
3 humans
1 hm. bld. dnr.
5 birds
8 mosq. pools
Grant
1 human
1 bird
Big Stone
1 human
1 bird
Itasca
1 bird
Mahnomen
1 human
Clay
9 humans
(1 death)
1 hn. bld. dnr.
1 bird
Traverse
5 humans
Lake
2 birds
St. Louis
1 human
1 horse
1 bird
150
Miles
Houston
2 horses
1 asymp.
horse
1 bird
Counties
56
15
33
7
1
3
9
63