Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort

The effectiveness of influenza vaccination programmes is seldom known during an epidemic. We developed an internet-based system to record influenza-like symptoms and response to infection in a participating cohort. Using self-reports of influenza-like symptoms and of influenza vaccine history and up...

Full description

Saved in:
Bibliographic Details
Published in:Epidemiology and infection 2012-07, Vol.140 (7), p.1309-1315
Main Authors: EAMES, K. T. D., BROOKS-POLLOCK, E., PAOLOTTI, D., PEROSA, M., GIOANNINI, C., EDMUNDS, W. J.
Format: Article
Language:English
Subjects:
Absenteeism
Adolescent
Adult
Aged, 80 and over
Applied microbiology
Biological and medical sciences
Child
Child, Preschool
Cohort Studies
Data Collection - methods
Diseases
Estimates
Estimation methods
Female
Fundamental and applied biological sciences. Psychology
Health care industry
Health services
Humans
Illnesses
Immunization
Infant
Infant, Newborn
Infections
Influenza
Influenza vaccines
Influenza Vaccines - administration & dosage
Influenza Vaccines - immunology
Influenza, Human - pathology
Influenza, Human - prevention & control
Internet
Male
Methods
Microbiology
Middle Aged
Pandemics
Questionnaires
Respiratory diseases
Seasons
Sentinel surveillance
Surveillance
Symptoms
Vaccination
Vaccines
Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)
Young Adult
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3
cites cdi_FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3
container_end_page 1315
container_issue 7
container_start_page 1309
container_title Epidemiology and infection
container_volume 140
creator EAMES, K. T. D.
BROOKS-POLLOCK, E.
PAOLOTTI, D.
PEROSA, M.
GIOANNINI, C.
EDMUNDS, W. J.
description The effectiveness of influenza vaccination programmes is seldom known during an epidemic. We developed an internet-based system to record influenza-like symptoms and response to infection in a participating cohort. Using self-reports of influenza-like symptoms and of influenza vaccine history and uptake, we estimated vaccine effectiveness (VE) without the need for individuals to seek healthcare. We found that vaccination with the 2010 seasonal influenza vaccine was significantly protective against influenza-like illness (ILI) during the 2010–2011 influenza season (VE 52%, 95% CI 27–68). VE for individuals who received both the 2010 seasonal and 2009 pandemic influenza vaccines was 59% (95% CI 27–77), slightly higher than VE for those vaccinated in 2010 alone (VE 46%, 95% CI 9–68). Vaccinated individuals with ILI reported taking less time off work than unvaccinated individuals with ILI (3·4 days vs. 5·3 days, P
doi_str_mv 10.1017/S0950268811001804
format article
fullrecord <record><control><sourceid>jstor_proqu</sourceid><recordid>TN_cdi_proquest_miscellaneous_1020836693</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><cupid>10_1017_S0950268811001804</cupid><jstor_id>41549138</jstor_id><sourcerecordid>41549138</sourcerecordid><originalsourceid>FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3</originalsourceid><addsrcrecordid>eNqN0U2LFDEQBuAgijuu_gAPSoMIXlpT-Y43WdxVWBD8OHga0klFe-hOj0n3wvrrTTPjKorgKZD3qaKKIuQh0OdAQb_4QK2kTBkDQCkYKm6RDQhlWyGovU02a9yu-Qm5V8qOUmqZ0XfJCQNLlQC2IZ_fu30fGlcKljJimpspNn2Kw4Lpu2uunPd9wgZjRD_3V5gqe9m45Ibr0pcVu1T9jDnh3HauYGj89HXK831yJ7qh4IPje0o-nb_-ePamvXx38fbs1WXrJYW55cpKq3kHIYbooXMUolMASkpgyI2ysVOeG4zYBckCC9rUX9aFQJEqx0_Js0PffZ6-LVjm7dgXj8PgEk5L2QJl1HClLP8PCkwLoZis9MkfdDctua59UFJrAWtDOCifp1Iyxu0-96PL1xWtTm__OlGteXzsvHQjhpuKnzep4OkRuOLdELNLvi-_nLSKawPVPTq4XZmnfJMLkMICNzXnx-Hc2OU-fMHfd_jXeD8ARcuwig</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1012577413</pqid></control><display><type>article</type><title>Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort</title><source>Cambridge Journals Online</source><source>PMC (PubMed Central)</source><source>JSTOR Archival Journals and Primary Sources Collection</source><creator>EAMES, K. T. D. ; BROOKS-POLLOCK, E. ; PAOLOTTI, D. ; PEROSA, M. ; GIOANNINI, C. ; EDMUNDS, W. J.</creator><creatorcontrib>EAMES, K. T. D. ; BROOKS-POLLOCK, E. ; PAOLOTTI, D. ; PEROSA, M. ; GIOANNINI, C. ; EDMUNDS, W. J.</creatorcontrib><description>The effectiveness of influenza vaccination programmes is seldom known during an epidemic. We developed an internet-based system to record influenza-like symptoms and response to infection in a participating cohort. Using self-reports of influenza-like symptoms and of influenza vaccine history and uptake, we estimated vaccine effectiveness (VE) without the need for individuals to seek healthcare. We found that vaccination with the 2010 seasonal influenza vaccine was significantly protective against influenza-like illness (ILI) during the 2010–2011 influenza season (VE 52%, 95% CI 27–68). VE for individuals who received both the 2010 seasonal and 2009 pandemic influenza vaccines was 59% (95% CI 27–77), slightly higher than VE for those vaccinated in 2010 alone (VE 46%, 95% CI 9–68). Vaccinated individuals with ILI reported taking less time off work than unvaccinated individuals with ILI (3·4 days vs. 5·3 days, P&lt;0·001).</description><identifier>ISSN: 0950-2688</identifier><identifier>EISSN: 1469-4409</identifier><identifier>DOI: 10.1017/S0950268811001804</identifier><identifier>PMID: 21906412</identifier><identifier>CODEN: EPINEU</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Absenteeism ; Adolescent ; Adult ; Aged, 80 and over ; Applied microbiology ; Biological and medical sciences ; Child ; Child, Preschool ; Cohort Studies ; Data Collection - methods ; Diseases ; Estimates ; Estimation methods ; Female ; Fundamental and applied biological sciences. Psychology ; Health care industry ; Health services ; Humans ; Illnesses ; Immunization ; Infant ; Infant, Newborn ; Infections ; Influenza ; Influenza vaccines ; Influenza Vaccines - administration &amp; dosage ; Influenza Vaccines - immunology ; Influenza, Human - pathology ; Influenza, Human - prevention &amp; control ; Internet ; Male ; Methods ; Microbiology ; Middle Aged ; Pandemics ; Questionnaires ; Respiratory diseases ; Seasons ; Sentinel surveillance ; Surveillance ; Symptoms ; Vaccination ; Vaccines ; Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects) ; Young Adult</subject><ispartof>Epidemiology and infection, 2012-07, Vol.140 (7), p.1309-1315</ispartof><rights>Copyright © Cambridge University Press 2011</rights><rights>Cambridge University Press 2012</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3</citedby><cites>FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/41549138$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0950268811001804/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>314,777,781,27905,27906,58219,58452,72709</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=25963781$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21906412$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>EAMES, K. T. D.</creatorcontrib><creatorcontrib>BROOKS-POLLOCK, E.</creatorcontrib><creatorcontrib>PAOLOTTI, D.</creatorcontrib><creatorcontrib>PEROSA, M.</creatorcontrib><creatorcontrib>GIOANNINI, C.</creatorcontrib><creatorcontrib>EDMUNDS, W. J.</creatorcontrib><title>Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort</title><title>Epidemiology and infection</title><addtitle>Epidemiol Infect</addtitle><description>The effectiveness of influenza vaccination programmes is seldom known during an epidemic. We developed an internet-based system to record influenza-like symptoms and response to infection in a participating cohort. Using self-reports of influenza-like symptoms and of influenza vaccine history and uptake, we estimated vaccine effectiveness (VE) without the need for individuals to seek healthcare. We found that vaccination with the 2010 seasonal influenza vaccine was significantly protective against influenza-like illness (ILI) during the 2010–2011 influenza season (VE 52%, 95% CI 27–68). VE for individuals who received both the 2010 seasonal and 2009 pandemic influenza vaccines was 59% (95% CI 27–77), slightly higher than VE for those vaccinated in 2010 alone (VE 46%, 95% CI 9–68). Vaccinated individuals with ILI reported taking less time off work than unvaccinated individuals with ILI (3·4 days vs. 5·3 days, P&lt;0·001).</description><subject>Absenteeism</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Aged, 80 and over</subject><subject>Applied microbiology</subject><subject>Biological and medical sciences</subject><subject>Child</subject><subject>Child, Preschool</subject><subject>Cohort Studies</subject><subject>Data Collection - methods</subject><subject>Diseases</subject><subject>Estimates</subject><subject>Estimation methods</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Health care industry</subject><subject>Health services</subject><subject>Humans</subject><subject>Illnesses</subject><subject>Immunization</subject><subject>Infant</subject><subject>Infant, Newborn</subject><subject>Infections</subject><subject>Influenza</subject><subject>Influenza vaccines</subject><subject>Influenza Vaccines - administration &amp; dosage</subject><subject>Influenza Vaccines - immunology</subject><subject>Influenza, Human - pathology</subject><subject>Influenza, Human - prevention &amp; control</subject><subject>Internet</subject><subject>Male</subject><subject>Methods</subject><subject>Microbiology</subject><subject>Middle Aged</subject><subject>Pandemics</subject><subject>Questionnaires</subject><subject>Respiratory diseases</subject><subject>Seasons</subject><subject>Sentinel surveillance</subject><subject>Surveillance</subject><subject>Symptoms</subject><subject>Vaccination</subject><subject>Vaccines</subject><subject>Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)</subject><subject>Young Adult</subject><issn>0950-2688</issn><issn>1469-4409</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqN0U2LFDEQBuAgijuu_gAPSoMIXlpT-Y43WdxVWBD8OHga0klFe-hOj0n3wvrrTTPjKorgKZD3qaKKIuQh0OdAQb_4QK2kTBkDQCkYKm6RDQhlWyGovU02a9yu-Qm5V8qOUmqZ0XfJCQNLlQC2IZ_fu30fGlcKljJimpspNn2Kw4Lpu2uunPd9wgZjRD_3V5gqe9m45Ibr0pcVu1T9jDnh3HauYGj89HXK831yJ7qh4IPje0o-nb_-ePamvXx38fbs1WXrJYW55cpKq3kHIYbooXMUolMASkpgyI2ysVOeG4zYBckCC9rUX9aFQJEqx0_Js0PffZ6-LVjm7dgXj8PgEk5L2QJl1HClLP8PCkwLoZis9MkfdDctua59UFJrAWtDOCifp1Iyxu0-96PL1xWtTm__OlGteXzsvHQjhpuKnzep4OkRuOLdELNLvi-_nLSKawPVPTq4XZmnfJMLkMICNzXnx-Hc2OU-fMHfd_jXeD8ARcuwig</recordid><startdate>20120701</startdate><enddate>20120701</enddate><creator>EAMES, K. T. D.</creator><creator>BROOKS-POLLOCK, E.</creator><creator>PAOLOTTI, D.</creator><creator>PEROSA, M.</creator><creator>GIOANNINI, C.</creator><creator>EDMUNDS, W. J.</creator><general>Cambridge University Press</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QL</scope><scope>7RV</scope><scope>7T2</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8C1</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AN0</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>7QH</scope><scope>7U2</scope><scope>7UA</scope></search><sort><creationdate>20120701</creationdate><title>Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort</title><author>EAMES, K. T. D. ; BROOKS-POLLOCK, E. ; PAOLOTTI, D. ; PEROSA, M. ; GIOANNINI, C. ; EDMUNDS, W. J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Absenteeism</topic><topic>Adolescent</topic><topic>Adult</topic><topic>Aged, 80 and over</topic><topic>Applied microbiology</topic><topic>Biological and medical sciences</topic><topic>Child</topic><topic>Child, Preschool</topic><topic>Cohort Studies</topic><topic>Data Collection - methods</topic><topic>Diseases</topic><topic>Estimates</topic><topic>Estimation methods</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Health care industry</topic><topic>Health services</topic><topic>Humans</topic><topic>Illnesses</topic><topic>Immunization</topic><topic>Infant</topic><topic>Infant, Newborn</topic><topic>Infections</topic><topic>Influenza</topic><topic>Influenza vaccines</topic><topic>Influenza Vaccines - administration &amp; dosage</topic><topic>Influenza Vaccines - immunology</topic><topic>Influenza, Human - pathology</topic><topic>Influenza, Human - prevention &amp; control</topic><topic>Internet</topic><topic>Male</topic><topic>Methods</topic><topic>Microbiology</topic><topic>Middle Aged</topic><topic>Pandemics</topic><topic>Questionnaires</topic><topic>Respiratory diseases</topic><topic>Seasons</topic><topic>Sentinel surveillance</topic><topic>Surveillance</topic><topic>Symptoms</topic><topic>Vaccination</topic><topic>Vaccines</topic><topic>Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>EAMES, K. T. D.</creatorcontrib><creatorcontrib>BROOKS-POLLOCK, E.</creatorcontrib><creatorcontrib>PAOLOTTI, D.</creatorcontrib><creatorcontrib>PEROSA, M.</creatorcontrib><creatorcontrib>GIOANNINI, C.</creatorcontrib><creatorcontrib>EDMUNDS, W. J.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Nursing &amp; Allied Health Database</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Virology and AIDS Abstracts</collection><collection>Health &amp; Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Public Health Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central</collection><collection>British Nursing Database</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Safety Science and Risk</collection><collection>Water Resources Abstracts</collection><jtitle>Epidemiology and infection</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>EAMES, K. T. D.</au><au>BROOKS-POLLOCK, E.</au><au>PAOLOTTI, D.</au><au>PEROSA, M.</au><au>GIOANNINI, C.</au><au>EDMUNDS, W. J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort</atitle><jtitle>Epidemiology and infection</jtitle><addtitle>Epidemiol Infect</addtitle><date>2012-07-01</date><risdate>2012</risdate><volume>140</volume><issue>7</issue><spage>1309</spage><epage>1315</epage><pages>1309-1315</pages><issn>0950-2688</issn><eissn>1469-4409</eissn><coden>EPINEU</coden><abstract>The effectiveness of influenza vaccination programmes is seldom known during an epidemic. We developed an internet-based system to record influenza-like symptoms and response to infection in a participating cohort. Using self-reports of influenza-like symptoms and of influenza vaccine history and uptake, we estimated vaccine effectiveness (VE) without the need for individuals to seek healthcare. We found that vaccination with the 2010 seasonal influenza vaccine was significantly protective against influenza-like illness (ILI) during the 2010–2011 influenza season (VE 52%, 95% CI 27–68). VE for individuals who received both the 2010 seasonal and 2009 pandemic influenza vaccines was 59% (95% CI 27–77), slightly higher than VE for those vaccinated in 2010 alone (VE 46%, 95% CI 9–68). Vaccinated individuals with ILI reported taking less time off work than unvaccinated individuals with ILI (3·4 days vs. 5·3 days, P&lt;0·001).</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><pmid>21906412</pmid><doi>10.1017/S0950268811001804</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0950-2688
ispartof Epidemiology and infection, 2012-07, Vol.140 (7), p.1309-1315
issn 0950-2688
1469-4409
language eng
recordid cdi_proquest_miscellaneous_1020836693
source Cambridge Journals Online; PMC (PubMed Central); JSTOR Archival Journals and Primary Sources Collection
subjects Absenteeism
Adolescent
Adult
Aged, 80 and over
Applied microbiology
Biological and medical sciences
Child
Child, Preschool
Cohort Studies
Data Collection - methods
Diseases
Estimates
Estimation methods
Female
Fundamental and applied biological sciences. Psychology
Health care industry
Health services
Humans
Illnesses
Immunization
Infant
Infant, Newborn
Infections
Influenza
Influenza vaccines
Influenza Vaccines - administration & dosage
Influenza Vaccines - immunology
Influenza, Human - pathology
Influenza, Human - prevention & control
Internet
Male
Methods
Microbiology
Middle Aged
Pandemics
Questionnaires
Respiratory diseases
Seasons
Sentinel surveillance
Surveillance
Symptoms
Vaccination
Vaccines
Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)
Young Adult
title Rapid assessment of influenza vaccine effectiveness: analysis of an internet-based cohort
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-19T19%3A59%3A14IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Rapid%20assessment%20of%20influenza%20vaccine%20effectiveness:%20analysis%20of%20an%20internet-based%20cohort&rft.jtitle=Epidemiology%20and%20infection&rft.au=EAMES,%20K.%20T.%20D.&rft.date=2012-07-01&rft.volume=140&rft.issue=7&rft.spage=1309&rft.epage=1315&rft.pages=1309-1315&rft.issn=0950-2688&rft.eissn=1469-4409&rft.coden=EPINEU&rft_id=info:doi/10.1017/S0950268811001804&rft_dat=%3Cjstor_proqu%3E41549138%3C/jstor_proqu%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c501t-3695973b1dfdfc1ba01fa61165512e3869fb6c38efebd52d2d783862bdd0e06a3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1012577413&rft_id=info:pmid/21906412&rft_cupid=10_1017_S0950268811001804&rft_jstor_id=41549138&rfr_iscdi=true