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The 2006-2007 influenza surveillance season in Canada has officially started - sporadic influenza activity reported in British Columbia During weeks 35 & 36, sporadic influenza activity was reported in the Vancouver Island and Fraser regions of British Columbia while the rest of the country reported no activity (see map). Over the two week period, PHAC received 1380 reports of laboratory tests for influenza and none were positive for influenza (see table). The ILI consultation rate increased from 3 per 1,000 patient visits in week 35 to 7 per 1,000 patient visits in week 36 (see ILI graph). Sentinel participation is currently low (~ 35% over the two week period) making the rates unstable. However, sentinel participation will increase to over 75% as the season progresses. No new influenza or ILI outbreaks were reported during weeks 35 and 36. In the current season to date, there have been no laboratory-confirmed influenza-associated pediatric hospitalizations reported through the IMPACT (Immunization Monitoring Program Active) network. Antigenic Characterization: International: Human Avian Influenza: ____________________________ Antiviral Resistance |
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Total number of influenza tests performed and number of positive tests by province/territory of testing laboratory, Canada, 2006-2007
Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals. Abbreviations: Newfoundland/Labrador (NL), Prince Edward Island (PE), New Brunswick (NB), Nova Scotia (NS), Quebec (QC), Ontario (ON), Manitoba (MB), Saskatchewan (SK), Alberta (AB), British Columbia (BC), Yukon (YT), Northwest Territories (NT), Nunavut (NU) Respiratory virus laboratory detections in Canada, by geographic
regions, are available weekly on the following website:
Number of influenza surveillance regions† reporting widespread or localized influenza activity, Canada, by report week, 2006-2007 (N=76) sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Influenza tests reported and percentage of tests positive, Canada, by report week, 2006-2007
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2006-2007
Influenza strain characterization, Canada, cumulative, 2006-2007 influenza season by the Respiratory Viruses Section at the National Microbiology Laboratory
{Strain characterization, number identified, per cent of total number} NACI recommends that the trivalent vaccine for the 2006-2007 season in Canada contain A/New Caledonia/20/1999 (H1N1)-like, A/Wisconsin/67/2005 (H3N2)-like, and B/Malaysia/2506/2004-like virus antigens. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2006-2007 compared to 1996/97 through to 2005/06 seasons
Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Number of New Outbreaks in Long Term Care Facilities, Canada, by Report Week, 2006-2007
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Please note that the above graphs may change as late returns come in. Definitions for the 2006-2007 season [FluWatch]
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Last Updated: 2006-09-15 |