Date post: | 27-Dec-2015 |
Category: |
Documents |
Upload: | alaina-dorsey |
View: | 213 times |
Download: | 0 times |
1
TARRANT (The Alberta Recording and ReseArch NeTwork)TARRANT Annual Meeting, Calgary, February 24, 2005
Dr Jim Dickinson
MBBS, CCFP, PhD, FRACGP, FAFPHM
UCMC North Hill, Calgary
TARRANT Annual MeetingCalgary, February 24, 2005 2
TARRANT- Introduction
Influenza surveillance system in AlbertaA history of more than 20 yearsIntegration of clinical and virological data37 sentinel physicians Covering 8 of the 9 health regions in
Alberta
TARRANT Annual MeetingCalgary, February 24, 2005 3
Information Loop of TARRANT Surveillance Data
Summaries,Interpretations,
Recommendations
Weekly ReportsTARRANT Central Office
TARRANT sentinel physicians
Local Health Regions
Alberta Health
Health Canada
WHO
Other data sources
Provincial Lab
TARRANT Annual MeetingCalgary, February 24, 2005 4
Use of TARRANT Surveillance Data
Measurement of influenza epidemicsIdentification of community virus typesGuidance to planning of programs to
prevent and control influenza
TARRANT Annual MeetingCalgary, February 24, 2005 5
What TARRANT Doctors Do?
Send in clinical data (Influenza-Like Illness and Lower Respiratory Tract Infection) each week
Either By completing the weekly incident report forms
Or Through automatic computer-based information
transfer
Submit two swabs each week to the provincial lab
TARRANT Annual MeetingCalgary, February 24, 2005 6
New Recruitment
Potential physicians are: Interested in public healthWilling to send data consistently
Potential practices are: Likely to see full range of patientsLikely to see flu patientsWalk-in practices
TARRANT Annual MeetingCalgary, February 24, 2005 7
TARRANT Sentinel Physicians
Health Region #Sentinel physiciansR1 Chinook R H A 3R2 Palliser 4R3 Calgary 11R4 David Thompson 9 (1 practice)R5 East Central Health 1R6 Capital Health 6R7 Aspen R H A 2 R8 Peace Country Health 1R9 Northern Lights 0
TOTAL 37
TARRANT Annual MeetingCalgary, February 24, 2005 8
Sentinels’ Reporting Behavior 2003-2005
0
2
4
6
8
10
12
14
16
18
20w
k46
wk5
0w
k2w
k6w
k10
wk1
4w
k18
wk2
2w
k26
wk3
0w
k34
wk3
8w
k42
wk4
6w
k50
wk2
wk6
Total # recorders2003 2004 2005
Year-round reporting first started
TARRANT Annual MeetingCalgary, February 24, 2005 9
% Weeks Reported Per SentinelWeek 43, 2003 to Week 6, 2005 (68 weeks)
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
% of weeks
TARRANT Annual MeetingCalgary, February 24, 2005 10
Challenges
Only about 10 sentinels send data year-round consistently
Very low reporting rates during the summer
Interpretation of the computerized data from one practice
TARRANT Annual MeetingCalgary, February 24, 2005 11
Which Sentinels Persevere?What’s Available in the Literature1
Factors related to long compliance Interest in epidemiology<5 or ~20 years seniority
Factors related to short compliance Interest in local epidemiology surveysExperience with other surveillance networks
1. Chauvin P, Valleron AJ. Monitoring the compliance of sentinel general parctitioners in public health surveillance: which GPs persevere? International Journal of Epidemiology. 1997; 26:166-172
TARRANT Annual MeetingCalgary, February 24, 2005 12
Influenza-Like Illness and Influenza IsolatesTARRANT 2004-2005
0
5
10
15
20
25
30
35
40
45
50
Aug 3
0 (2
004)
6-Sep
13-S
ep
20-S
ep
27-S
ep4-
Oct
11-O
ct
18-O
ct
25-O
ct
1-Nov
8-Nov
15-N
ov
22-N
ov
29-N
ov
6-Dec
13-D
ec
20-D
ec
27-D
ec
Jan 3
(200
5)
10-J
an
17-J
an
24-J
an
31-J
an
Week beginning
# I
LI
pa
tie
nts
0
2
4
6
8
10
#IL
I ca
se
s/1
00
pa
tie
nts
se
en
Samples Submitted Positive Influenza
ILI(Influenza Like Illness) #ILI/100 cases seen
TARRANT Annual MeetingCalgary, February 24, 2005 13
Influenza-Like Illness
TARRANT 1999-2005
00.20.40.60.8
11.21.41.61.8
01-Oct
15-Oct
29-Oct
12-Nov
26-Nov
10-Dec
24-Dec
07-Jan
21-Jan
04-Feb
18-Feb
04-Mar
18-Mar
01-Apr
15-Apr
29-Apr
13-May
27-May
'04-05
'03-04
'02-03
'01-02
00-01
99-00
Week beginning...
'04-05 '03-04 '02-03 '01-02 00-01 99-00
#IL
I c
as
es
/rec
ord
er/d
ay