House Sparrow Nestlings as Sentinels for West Nile Virus in Saskatchewan - PowerPoint PPT Presentation

Loading...

PPT – House Sparrow Nestlings as Sentinels for West Nile Virus in Saskatchewan PowerPoint presentation | free to download - id: 4be17e-NWFmO



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

House Sparrow Nestlings as Sentinels for West Nile Virus in Saskatchewan

Description:

House Sparrow Nestlings as Sentinels for West Nile Virus in Saskatchewan Caroline Millins, Alex Reid, Phil Curry, Mike Drebot, Peter Buck, Ted Leighton – PowerPoint PPT presentation

Number of Views:179
Avg rating:3.0/5.0
Slides: 20
Provided by: CarolineM151
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: House Sparrow Nestlings as Sentinels for West Nile Virus in Saskatchewan


1
House Sparrow Nestlings as Sentinels for West
Nile Virus in Saskatchewan
  • Caroline Millins, Alex Reid, Phil Curry, Mike
    Drebot, Peter Buck, Ted Leighton

2
Outline
  • Introduction
  • Materials and Methods
  • Results
  • Discussion
  • Conclusion

3
WNV Cycle


4
Total number of cases of human WNV infections in
Canada and SK
5
Five Hills Health Region
6
  • Dead Corvid WNV surveillance
  • Provides an early warning of WNV activity,
  • However
  • Dead Corvid submissions from rural areas are
    generally low.

7
(No Transcript)
8
Study Question
Can House Sparrow nestlings be used as an
alternate method of wild bird WNV surveillance in
a rural, high risk area of Saskatchewan ?
9
2006 2007
2005
Month (2005) July August
Prevalence (n) 6.5 (61) 30 (11)
10
Methods
N
McTaggart
Souris River
50km
House Sparrow sample location Mosquito trap
location
11
House Sparrow nest sites
12
Diagnostic Testing
West Nile virus RT-PCR
VecTestTM
13
Results
  • 2006
  • 2007

House Sparrow () WNV infected Mosquito Pools
Weyburn 0 (592) 0
Estevan Not sampled 15
House Sparrow () WNV infected Mosquito Pools
Weyburn 4 (100) 12
Estevan 0 (100) 210
14
  • House Sparrow eggs were collected in July from
    Weyburn and Estevan
  • WNV plaque reduction neutralisation carried out
    on yolks

Measuring Immunity to WNV, 2007
Location egg collected Number of eggs collected Number with antibody titre
Weyburn 70 5
Estevan 26 2
15
Discussion
  • 2006
  • WNV activity appeared sharply localized in
    southeast SK from May 30 to August 5 2006
  • Implications for rural
  • surveillance

16
Discussion
  • House Sparrow nestling surveillance was not a
    sensitive marker of WNV activity

2007
17
Conclusions
  • House Sparrow nestling surveillance has not been
    a useful surveillance tool in southeast
    Saskatchewan
  • An alternate sentinel bird species could be
    considered for use in this area

18
Thankyou
  • Ted Leighton, CCWHC
  • Alex Reid, WCVM graduate
  • Phil Curry, Saskatchewan Health
  • Mike Drebot, PHAC
  • Peter Buck, PHAC
  • Anju Tumber, Prairie Diagnostic Services
  • Toni Hansen, Molecular Diagnostics, Regina
  • Patrick Marnie Zimmer, CCWHC

19
Any Questions ?
About PowerShow.com