Influenza vaccines for preventing coronary heart disease

Keller T, Weeda VB, van Dongen CJ, Levi M

Published Online:

July 16, 2008

Vaccination against influenza may reduce the risk of coronary heart disease. All randomised trials comparing people receiving active vaccine with those receiving a placebo vaccine or no vaccine were searched. Two small trials were found, with a total of 778 participants. Only a small number of people suffered acute heart disease in these trials, so it is difficult to reach any conclusions about the effect of influenza vaccination for preventing heart disease.

Abstract (click to read)

Background:

Vaccination against influenza may reduce the risk of coronary heart disease. However the evidence is scarce and the size of the benefit is unknown.

Objectives:

To assess the potential benefit of influenza vaccination for primary and secondary prevention of coronary heart disease.

Search strategy:

We searched the Cochrane Central Register of Controlled Trials, Issue 4 2007, MEDLINE (2005 to January 2008) and EMBASE (2005 to January 2008). Furthermore, we searched databases for recent or ongoing trials and reference lists of articles. Lastly, we contacted pharmaceutical companies for non published data or trials on influenza vaccination. No language restrictions were applied.

Selection criteria:

Randomised clinical trials of influenza vaccination compared to placebo or no treatment in primary or secondary prevention with outcome on coronary heart disease.

Data collection and analysis:

Data extraction and the assessment of quality was done with a predefined form by two review authors independently. We contacted investigators when data on the outcome were missing.

Main results:

In the two included trials, 778 participants were randomised to vaccination or placebo. Only 39 participants died a cardiovascular death. In addition, only 35 participants had an acute myocardial infarction. Consequently, estimates of treatment effects were imprecise.

Authors' conclusions:

Despite the significant effect noted in the studies, we concluded that there are not enough data to evaluate the effect of vaccination on coronary heart disease.

This record should be cited as:

Keller T, Weeda VB, van Dongen CJ, Levi M. Influenza vaccines for preventing coronary heart disease. Cochrane Database of Systematic Reviews 2008, Issue 3. Art. No.: CD005050. DOI: 10.1002/14651858.CD005050.pub2

Assessed as up to date:

January 21, 2008

Find the research

Get full text at The Cochrane Library

Primary Review Group:

Heart Group

Health topics:

Heart & circulation > Heart disease prevention > Other

Cochrane Summaries^beta

Independent high-quality evidence for health care decision making

Influenza vaccines for preventing coronary heart disease

More like this

Copyright © 2011 - The Cochrane Collaboration