• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

Euro Surveill. Interim estimates of 2013/14 vaccine effectiveness against influenza A(H1N1)pdm09 from Canada?s sentinel surveillance network, January

Giuseppe

Emeritus
[Source: Eurosurveillance, full page: (LINK). Abstract, edited.]


Eurosurveillance, Volume 19, Issue 5, 06 February 2014

Rapid communications

Interim estimates of 2013/14 vaccine effectiveness against influenza A(H1N1)pdm09 from Canada?s sentinel surveillance network, January 2014

D M Skowronski <SUP>1</SUP><SUP>,2</SUP>, C Chambers<SUP>1</SUP>, S Sabaiduc<SUP>1</SUP>, G De Serres<SUP>3</SUP><SUP>,4</SUP><SUP>,5</SUP>, J A Dickinson<SUP>6</SUP>, A L Winter<SUP>7</SUP>, K Fonseca<SUP>6</SUP><SUP>,8</SUP>, J B Gubbay<SUP>7</SUP><SUP>,9</SUP>, H Charest<SUP>3</SUP>, M Petric<SUP>1</SUP><SUP>,2</SUP>, M Krajden<SUP>1</SUP><SUP>,2</SUP>, S M Mahmud<SUP>10</SUP><SUP>,11</SUP>, P Van Caeseele<SUP>11</SUP><SUP>,12</SUP>, T L Kwindt<SUP>1</SUP><SUP>,2</SUP>, A Eshaghi<SUP>7</SUP>, N Bastien<SUP>13</SUP>, Y Li<SUP>11</SUP><SUP>,13</SUP>
<SUP></SUP>
<SUP>1</SUP>British Columbia Centre for Disease Control, Vancouver, Canada - 2 University of British Columbia, Vancouver, Canada - 3 Institut National de Sant? Publique du Qu?bec (National Institute of Health of Quebec), Qu?bec, Canada - 4 Laval University, Quebec, Canada - 5 Centre Hospitalier Universitaire de Qu?bec (University Hospital Centre of Quebec), Qu?bec, Canada - 6 University of Calgary, Calgary, Canada - 7 Public Health Ontario, Toronto, Canada - 8 Alberta Provincial Laboratory, Calgary, Canada - 9 University of Toronto, Toronto, Canada - 10 Winnipeg Regional Health Authority, Winnipeg, Canada - 11 University of Manitoba, Winnipeg, Canada - 12 Cadham Provincial Laboratory, Winnipeg, Canada - 13 National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canada
_____

Citation style for this article: Skowronski DM, Chambers C, Sabaiduc S, De Serres G, Dickinson JA, Winter AL, Fonseca K, Gubbay JB, Charest H, Petric M, Krajden M, Mahmud SM, Van Caeseele P, Kwindt TL, Eshaghi A, Bastien N, Li Y. Interim estimates of 2013/14 vaccine effectiveness against influenza A(H1N1)pdm09 from Canada?s sentinel surveillance network, January 2014. Euro Surveill. 2014;19(5):pii=20690. Available online: http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=20690
Date of submission: 29 January 2014

_________

The 2013/14 influenza season to date in Canada has been characterised by predominant (90%) A(H1N1)pdm09 activity. Vaccine effectiveness (VE) was assessed in January 2014 by Canada?s sentinel surveillance network using a test-negative case?control design. Interim adjusted-VE against medically-attended laboratory-confirmed influenza A(H1N1)pdm09 infection was 74% (95% CI: 58?83). Relative to vaccine, A(H1N1)pdm09 viruses were antigenically similar and genetically well conserved, with most showing just three mutations across the 50 amino acids comprising antigenic sites of the haemagglutinin protein.


-
-------
 
Re: Euro Surveill. Interim estimates of 2013/14 vaccine effectiveness against influenza A(H1N1)pdm09 from Canada?s sentinel surveillance network, January 2014

Excerpt from the above paper:

In summary, our interim findings indicate that the 2013/14 TIV provides substantial protection against resurgent but conserved A(H1N1)pdm09 viruses circulating in Canada during the 2013/14 season, reducing the risk of medically-attended laboratory-confirmed A(H1N1)pdm09 illness by about three quarters. Neither antigenic drift nor homologous vaccine failure can account for resurgent A(H1N1)pdm09 activity this season in Canada. Other factors involved in agent?host interaction, including pre-existing antibody, should be considered in explaining the current epidemiology of this virus.
 
Re: Euro Surveill. Interim estimates of 2013/14 vaccine effectiveness against influenza A(H1N1)pdm09 from Canada?s sentinel surveillance network, January 2014

[Source: CTV, full page: (LINK).]


This year's flu shot offered good protection against serious illness

by Helen Branswell


A new Canadian study suggests this year's flu shot was 74 per cent effective at preventing flu so severe that people needed medical treatment.

(?)


.
?..
 
Back
Top