2003 Surveillance for West Nile virus in Manitoba

WNV Patients by Regional Health Authority 2003

All cases have now been classified. Some cases have been recently reclassified from NS to Non-NS.

Regional Health Authority

Asymptomatic

West Nile Virus Non-Neurological Syndrome

West Nile Virus
Neurological Syndrome

Under
Investigation

TOTAL
Assiniboine

0+

51*+

11

0

62*
Brandon

0

6

2

0

8
Central

1+

18+

2

0

21
Interlake

0

10

4

0

14
N. Eastman

0

0

2

0

2
Parkland

0

3

4

0

7
S. Eastman

0

1

0

0

1
Winnipeg

0

18

10

0

28
TOTAL

1+

107*+

35

0

143*

2003 figures were finalized on April 20, 2004.

* Updated in 2005 after receiving a late report on a Manitoba resident with WNV who was investigated in Saskatchewan in 2003.

+ Updated in 2006 re: further classification from Asymptomatic to Fever.

West Nile Related Deaths:  In 2003, there were two human deaths related to a West Nile virus infection in Manitoba.

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Severity of WNV Disease By Age (Ave. Age 51; Age Range 14–92) 2003
Age in Years Asymptomatic West Nile Virus Non-Neurological Syndrome West Nile Virus
Neurological Syndrome		 Under
Investigation		 Total
Less than 30 0 10 2 0 12
30 - 39 0 15 3 0 18
40 - 49 1 27 8 0 36*
50 - 59 0+ 33+ 8 0 41
60 - 69 0+ 13+ 6 0 19
Over 70 0 9 8 0 17
Totals 1+ 107*+ 35 0 143*

2003 figures were finalized on April 20, 2004.

* Updated in 2005 after receiving a late report on a Manitoba resident with WNV who was investigated in Saskatchewan in 2003.

+ Updated in 2006 re: further classification from Asymptomatic to Fever.

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WNV Disease by Gender 2003
Gender Asymptomatic West Nile Virus Non-Neurological Syndrome West Nile Virus
Neurological Syndrome		 Under
Investigation		 Total
Male 1+ 52+ 22 0 75
Female 0+ 55*+ 13 0 68*
Total 1+ 107*+ 35 0 143*

2003 figures were finalized on April 20, 2004.

* Updated in 2005 after receiving a late report on a Manitoba resident with WNV who was investigated in Saskatchewan in 2003.

+Updated in 2006 re: further classification from Asymptomatic to Fever.

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Additional Surveillance Indicators 2003 2002
Sentinel Chickens 24 7
Mosquito Pools 290 15
Horse Cases 47 236
Other Animals
 -- Alpaca (2)
 -- Stones Sheep (2)
 -- Musk Ox (1)		 5 0
Human Cases 143* 0

2003 figures were finalized on April 20, 2004.

* Updated in 2005 after receiving a late report on a Manitoba resident with WNV who was investigated in Saskatchewan in 2003.

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Dead Corvid Surveillance Program 2003

A

B

C

D

Number of birds picked up

Of column A, number of birds sent for testing

Of column A, number of birds not sent for testing as they were unacceptable specimens

Number of birds that tested positive (presumptive or confirmed)

914

819

95

134

2003 figures were finalized on October 16, 2003.

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Positive Birds by Regional Response Team (RRT) Area 2003:
Winnipeg RRT:
Western RRT:
RM of East St Paul
RM of Headingley
RM of West St Paul
Winnipeg - Assiniboine South
Winnipeg - Downtown
Winnipeg - Fort Garry
Winnipeg - Inkster
Winnipeg - Pt Douglas
Winnipeg - River East
Winnipeg - River Heights
Winnipeg - Seven Oaks
Winnipeg - St. Boniface
Winnipeg - St James
Winnipeg - St. Vital
Winnipeg - Transcona

Central RRT:
City of Portage la Prairie
City of Selkirk
City of Winkler
RM of Cartier
RM of Eriksdale
RM of Fisher
RM of Grey
RM of Lorne
RM of Louise
RM of Macdonald
RM of Montcalm
RM of Morris
RM of Pembina
RM of Portage La Prairie
RM of Rhineland
RM of Rockwood
RM of Roland
RM of Rosser
RM of St. Andrews
RM of St. Clements
RM of Siglunes
RM of Stanley
RM of Westbourne
RM of Woodlands
Town of Altona
Town of Emerson
Town of Gladstone
Town of Morden
Town of Plum Coulee
Town of St. Francois Xavier
Town of Stonewall
Town of Teulon
Town of Winnipeg Beach
Village of McGregor

City of Brandon
City of Dauphin
RM of Gilbert Plains
RM of Alonsa
RM of Birtle
RM of Cameron
RM of Cornwallis
RM of Daly
RM of Dauphin
RM of Elton
RM of Glenella
RM of Langford
RM of Miniota
RM of Minto
RM of Mossey River
RM of North Cypress
RM of Oakland
RM of Ochre River
RM of Odanah
RM of Riverside
RM of Rosedale
RM of Rossburn
RM of Saskatchewan
RM of Shell River
RM of Shoal Lake
RM of Sifton
RM of Ste. Rose
RM of Strathclair
RM of Strathcona
RM of Swan River
RM of Wallace
RM of Whitehead
RM of Whitewater
RM of Woodworth
Town of Boissevain
Town of Deloraine
Town of Hamiota
Town of Killarney
Town of Neepawa
Town of Roblin
Town of Souris
Town of Virden
Village of Waskada

Eastern RRT:
Hollow Water (FN)
Lac du Bonnet
RM of De Salaberry
RM of Hanover
RM of LaBroquerie
RM of Pinawa
RM of Piney
RM of Reynolds
RM of Ritchot
RM of Springfield
RM of Ste. Anne
RM of Stuartburn
RM of Tache
Town of Ste. Anne
Village of Powerview
Whiteshell Provincial Park

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Additional information and maps are available at the Public Health Agency of Canada website.

For WNV health concerns, contact your doctor or call:

Health Links - Info Santé
204-788-8200 (Winnipeg) or toll-free 1-888-315-9257