Canadian Journal of Infectious Diseases and Medical Microbiology

Canadian Journal of Infectious Diseases and Medical Microbiology / 2009 / Article

Original Article | Open Access

Volume 20 |Article ID 156873 | 6 pages |

Pandemic Influenza is a Strong Motivator for Participation in Vaccine Clinical Trials among HIV-Positive Canadian Adults


BACKGROUND: HIV-positive patients represent an immunosuppressed population at risk for severe influenza. In the event of a pandemic, such as 2009 H1N1, rapid implementation of vaccine clinical trials in target populations will be critical. In the present paper, knowledge and attitudes of HIV-positive adults regarding seasonal/pandemic influenza vaccination were evaluated, and facilitators and barriers to participation in vaccine clinical trials were explored.METHODS: A validated, 70-item, self-administered questionnaire was distributed to all HIV patients presenting for routine follow-up at eight Canadian Institutes of Health Research Canadian HIV Trials Network (CTN) sites from October 2008 to February 2009, as well as all participants in CTN trial 237. This study has representation from all Canadian provinces.RESULTS: In total, 610 HIV-positive adults responded (298 CTN 237 participants; 312 non-CTN 237 participants). Most reported receiving influenza vaccine last season (83% of CTN 237 participants versus 83% non-CTN 237 participants; P not significant) and most would receive a pandemic influenza vaccine if offered (76% versus 73%; P not significant). A majority believed that it was important to include HIV patients in vaccine clinical trials (65% versus 53%; P<0.001) and would agree to participate in trials of a pandemic vaccine if invited (86% versus 51%; P≤0.0001). Predictors of willingness to participate in a pandemic vaccine trial were ‘desire to be protected from pandemic flu’, OR 4.5 (95% CI 2 to 8) and ‘desire to help others’, OR 2.3 (95% CI 1.3 to 4.5). ‘Fear of needles’, OR 0.49 (95% CI 0.1 to 1.5) and ‘need for extra blood tests’, OR 0.49 (95% CI 0.2 to 1.4) were key barriers to participation.CONCLUSION: Most HIV-positive Canadian adults surveyed receive influenza vaccination. Protection from pandemic influenza is considered important and is a motivator for receiving influenza vaccine and future trial participation. Modifiable barriers to these objectives identified in the present study should be the focus of efforts to increase influenza immunization in this population.

Copyright © 2009 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

More related articles

229 Views | 159 Downloads | 5 Citations
 PDF  Download Citation  Citation
 Order printed copiesOrder

Related articles

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.