Ischaemic heart disease, influenza and influenza vaccination: a prospective case control study
Identifieur interne : 000381 ( Main/Exploration ); précédent : 000380; suivant : 000382Ischaemic heart disease, influenza and influenza vaccination: a prospective case control study
Auteurs : C Raina Macintyre [Australie] ; Anita E. Heywood [Australie] ; Pramesh Kovoor [Australie] ; Iman Ridda [Australie] ; Holly Seale [Australie] ; Timothy Tan [Australie, États-Unis] ; Zhanhai Gao [Australie] ; Anthea L. Katelaris [Australie] ; Ho Wai Derrick Siu [Australie] ; Vincent Lo [Australie] ; Richard Lindley [Australie] ; Dominic E. Dwyer [Australie]Source :
- Heart [ 1355-6037 ] ; 2013-12-15.
Abstract
Background Abundant, indirect epidemiological evidence indicates that influenza contributes to all-cause mortality and cardiovascular hospitalisations with studies showing increases in acute myocardial infarction (AMI) and death during the influenza season. Objective To investigate whether influenza is a significant and unrecognised underlying precipitant of AMI. Design Case-control study. Setting Tertiary referral hospital in Sydney, Australia, during 2008 to 2010. Patients Cases were inpatients with AMI and controls were outpatients without AMI at a hospital in Sydney, Australia. Main outcome measures Primary outcome was laboratory evidence of influenza. Secondary outcome was baseline self-reported acute respiratory tract infection. Results Of 559 participants, 34/275 (12.4%) cases and 19/284 (6.7%) controls had influenza (OR 1.97, 95% CI 1.09 to 3.54); half were vaccinated. None were recognised as having influenza during their clinical encounter. After adjustment, influenza infection was no longer a significant predictor of recent AMI. However, influenza vaccination was significantly protective (OR 0.55, 95% CI 0.35 to 0.85), with a vaccine effectiveness of 45% (95% CI 15% to 65%). Conclusions Recent influenza infection was an unrecognised comorbidity in almost 10% of hospital patients. Influenza did not predict AMI, but vaccination was significantly protective but underused. The potential population health impact of influenza vaccination, particularly in the age group 50–64 years, who are at risk for AMI but not targeted for vaccination, should be further explored. Our data should inform vaccination policy and cardiologists should be aware of missed opportunities to vaccinate individuals with ischaemic heart disease against influenza.
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DOI: 10.1136/heartjnl-2013-304320
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Dwyer</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Westmead Hospital, Sydney Medical School, University of Sydney, Westmead, New South Wales</wicri:regionArea><wicri:noRegion>New South Wales</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Microbiology (ICPMR), Westmead Hospital, Sydney, New South Wales</wicri:regionArea><wicri:noRegion>New South Wales</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Heart</title><title level="j" type="abbrev">Heart</title><idno type="ISSN">1355-6037</idno><idno type="eISSN">1468-201X</idno><imprint><publisher>BMJ Publishing Group Ltd and British Cardiovascular Society</publisher><date type="published" when="2013-12-15">2013-12-15</date><biblScope unit="volume">99</biblScope><biblScope unit="issue">24</biblScope><biblScope unit="page" from="1843">1843</biblScope></imprint><idno type="ISSN">1355-6037</idno></series><idno type="istex">0CFA4A09A497FCF97843678D9B6478D7D96A4150</idno><idno type="DOI">10.1136/heartjnl-2013-304320</idno><idno type="href">heartjnl-99-1843.pdf</idno><idno type="ArticleID">heartjnl-2013-304320</idno><idno type="PMID">23966030</idno><idno type="Related-article-href">10.1136/heartjnl-2013-304748</idno><idno type="related-article-ID">RA1</idno><idno type="local">heartjnl;99/24/1843</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1355-6037</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Background Abundant, indirect epidemiological evidence indicates that influenza contributes to all-cause mortality and cardiovascular hospitalisations with studies showing increases in acute myocardial infarction (AMI) and death during the influenza season. Objective To investigate whether influenza is a significant and unrecognised underlying precipitant of AMI. Design Case-control study. Setting Tertiary referral hospital in Sydney, Australia, during 2008 to 2010. Patients Cases were inpatients with AMI and controls were outpatients without AMI at a hospital in Sydney, Australia. Main outcome measures Primary outcome was laboratory evidence of influenza. Secondary outcome was baseline self-reported acute respiratory tract infection. Results Of 559 participants, 34/275 (12.4%) cases and 19/284 (6.7%) controls had influenza (OR 1.97, 95% CI 1.09 to 3.54); half were vaccinated. None were recognised as having influenza during their clinical encounter. After adjustment, influenza infection was no longer a significant predictor of recent AMI. However, influenza vaccination was significantly protective (OR 0.55, 95% CI 0.35 to 0.85), with a vaccine effectiveness of 45% (95% CI 15% to 65%). Conclusions Recent influenza infection was an unrecognised comorbidity in almost 10% of hospital patients. Influenza did not predict AMI, but vaccination was significantly protective but underused. The potential population health impact of influenza vaccination, particularly in the age group 50–64 years, who are at risk for AMI but not targeted for vaccination, should be further explored. Our data should inform vaccination policy and cardiologists should be aware of missed opportunities to vaccinate individuals with ischaemic heart disease against influenza.</div></front></TEI><affiliations><list><country><li>Australie</li><li>États-Unis</li></country><region><li>Massachusetts</li></region></list><tree><country name="Australie"><noRegion><name sortKey="Macintyre, C Raina" sort="Macintyre, C Raina" uniqKey="Macintyre C" first="C Raina" last="Macintyre">C Raina Macintyre</name></noRegion><name sortKey="Dwyer, Dominic E" sort="Dwyer, Dominic E" uniqKey="Dwyer D" first="Dominic E" last="Dwyer">Dominic E. Dwyer</name><name sortKey="Dwyer, Dominic E" sort="Dwyer, Dominic E" uniqKey="Dwyer D" first="Dominic E" last="Dwyer">Dominic E. Dwyer</name><name sortKey="Gao, Zhanhai" sort="Gao, Zhanhai" uniqKey="Gao Z" first="Zhanhai" last="Gao">Zhanhai Gao</name><name sortKey="Heywood, Anita E" sort="Heywood, Anita E" uniqKey="Heywood A" first="Anita E" last="Heywood">Anita E. Heywood</name><name sortKey="Katelaris, Anthea L" sort="Katelaris, Anthea L" uniqKey="Katelaris A" first="Anthea L" last="Katelaris">Anthea L. Katelaris</name><name sortKey="Kovoor, Pramesh" sort="Kovoor, Pramesh" uniqKey="Kovoor P" first="Pramesh" last="Kovoor">Pramesh Kovoor</name><name sortKey="Lindley, Richard" sort="Lindley, Richard" uniqKey="Lindley R" first="Richard" last="Lindley">Richard Lindley</name><name sortKey="Lo, Vincent" sort="Lo, Vincent" uniqKey="Lo V" first="Vincent" last="Lo">Vincent Lo</name><name sortKey="Macintyre, C Raina" sort="Macintyre, C Raina" uniqKey="Macintyre C" first="C Raina" last="Macintyre">C Raina Macintyre</name><name sortKey="Ridda, Iman" sort="Ridda, Iman" uniqKey="Ridda I" first="Iman" last="Ridda">Iman Ridda</name><name sortKey="Ridda, Iman" sort="Ridda, Iman" uniqKey="Ridda I" first="Iman" last="Ridda">Iman Ridda</name><name sortKey="Seale, Holly" sort="Seale, Holly" uniqKey="Seale H" first="Holly" last="Seale">Holly Seale</name><name sortKey="Siu, Ho Wai Derrick" sort="Siu, Ho Wai Derrick" uniqKey="Siu H" first="Ho Wai Derrick" last="Siu">Ho Wai Derrick Siu</name><name sortKey="Tan, Timothy" sort="Tan, Timothy" uniqKey="Tan T" first="Timothy" last="Tan">Timothy Tan</name></country><country name="États-Unis"><region name="Massachusetts"><name sortKey="Tan, Timothy" sort="Tan, Timothy" uniqKey="Tan T" first="Timothy" last="Tan">Timothy Tan</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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