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

*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)

Click on the map to view provinces/territories and maps for other weeks.

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Definitions for the 1999-2000 season

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