|
|
Canada:
Influenza activity is limited. Of the influenza surveillance regions for which
reports were received, only one within British Columbia reported localized
activity (maps). One hundred and seven sentinel physicians,
representing 91 census divisions, are participating in the FluWatch program
for the 1999-2000 season. The provincial distribution of the sentinel physicians
are: Newfoundland (10), Prince Edward Island (1), Nova Scotia (11), New Brunswick
(8), Quebec (5), Ontario (44), Manitoba (8), Saskatchewan (13), Yukon (1),
Northwest Territories (4), and Nunavut (2). In addition, 141 sentinel physicians
participating in provincial or local influenza surveillance programs will
be incorporated into the national surveillance data base. These include 31
physicians from Calgary, 50 from Ontario, and 60 from British Columbia. During
the week ending November 6, sentinel physicians reported 50 cases of influenza-like
illness (ILI) per 1000 patient visits. Since September 1999, the Laboratory
Centre for Disease Control (LCDC) has received 5699 reports of laboratory
tests for influenza viruses: 101 (1.8%) were confirmed as influenza A and
1 (0.02%) as influenza B (table).
United States:
In the week ending October 30, three states (Alaska, California, South Dakota)
and Puerto Rico reported regional influenza activity and 28 states reported
sporadic activity. Sentinel physician reports of ILI were within baseline
levels (0% to 3%). During the same week, the US World Health Organization
Collaborating Laboratories reported 421 tests for influenza viruses. Fourteen
(3%) were positive for influenza, including: 6 influenza A (H3N2) and 8 not
subtyped influenza A isolates. <http://www.cdc.gov/ncidod/diseases/flu/weekly.htm>
Outside of North America:
In Europe, the first local outbreak report was from Sweden. It was initiated
by an imported case of influenza and occurred during the third week of October
. Isolated viruses were influenza A and subtyped as A(H3N2). By the week ending
November 6, seven countries including the Czech republic, Germany, France,
Poland, Switzerland, Norway and England reported sporadic cases of influenza
A. <http://www.who.int/csr/disease/influenza/en/index.html>
|
Reported number of influenza virus (FV) tests performed
and influenza virus identifications by participating laboratories, Canada,
1999-2000
Reporting
laboratories by province |
October
31 - November 6, 1999 |
Total
FV tests |
Influenza
types and subtypes |
A (H1N1)
|
A (H3N2) |
A (not
subtyped) |
Type B
|
NL |
1 |
0 |
0 |
0 |
0 |
PEI |
3 |
0 |
0 |
0 |
0 |
NB |
1 |
0 |
0 |
0 |
0 |
NS |
0 |
0 |
0 |
0 |
0 |
QC |
106 |
0 |
0 |
3 |
0 |
ON |
230 |
0 |
0 |
6 |
0 |
MB |
0 |
0 |
0 |
0 |
0 |
SK |
81 |
0 |
0 |
1 |
0 |
AB |
275 |
0 |
0 |
13 |
0 |
BC |
64 |
0 |
0 |
1 |
0 |
Canada |
761 |
0 |
0 |
24 |
0 |
|
Specimens from NT, YT, and NU are sent to reference laboratories in other
provinces.
*No influenza A (H1N1) has been isolated in Canada this season.
The one appearing in the report of weeks 41 and 42 was a misprint.
Reporting
laboratories by province |
September
4 - November 6, 1999 |
Total
FV tests |
Influenza
types and subtypes |
A (H1N1)
|
A (H3N2) |
A
(not subtyped) |
Type B
|
NL |
3 |
0 |
0 |
0 |
0 |
PEI |
17 |
0 |
0 |
0 |
0 |
NB |
17 |
0 |
0 |
1 |
0 |
NS |
74 |
0 |
0 |
0 |
0 |
QC |
695 |
0 |
0 |
11 |
0 |
ON |
1899 |
0 |
0 |
20 |
0 |
MB |
413 |
0 |
0 |
3 |
0 |
SK |
648 |
0 |
0 |
12 |
0 |
AB |
1630 |
0 |
0 |
34 |
1 |
BC |
303 |
0 |
0 |
20 |
0 |
Canada |
5699 |
0 |
0 |
101 |
1 |
|
Specimens from NT, YT, and NU are sent to reference laboratories in other
provinces.
*No influenza A (H1N1) has been isolated in Canada this season. The one appearing
in the report of weeks 41 and 42 was a misprint.
Abbreviations: Nova Scotia (NS) , New Brunswick (NB),
Prince Edward Island (PE), Newfoundland/Labrador (NL), Quebec (QC), Ontario
(ON), Manitoba (MB), Saskatchewan (SK), Alberta (AB), British Columbia (BC),
Northwest Territories (NT), Yukon (YT), Nunavut (NU)
Respiratory virus laboratory detections in Canada, by geographic
regions, are available weekly on the following website: < http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/>
Influenza tests reported and percentage of tests positive,
Canada, by report week, 1999-2000
Influenza-like illness reporting rates, Canada, by report
week, 1999-2000
Number of influenza surveillance regions† reporting
widespread or localized influenza activity, Canada, by report week, 1999-2000
(N=53)
† sub-regions within the province or territory as defined by the provincial/territorial
epidemiologist
Influenza Activity Level by Influenza
Surveillance Regions, Canada
October 31 to November 6, 1999 (Week 44)
![Map](/web/20061212070418im_/http://www.phac-aspc.gc.ca/fluwatch/99-00/w44_99/figures/4499mape.gif)
Click
on the map to view provinces/territories and maps for other weeks.
|
|
|
|
|
No Data |
No Activity |
Sporadic Activity |
Localized Activity |
Widespread Activity |
Definitions for the 1999-2000
season
|