Using the health belief model to identify barriers to seasonal influenza vaccination among Australian adults in 2019

Mallory J Trent, Daniel A Salmon, C Raina MacIntyre, Mallory J Trent, Daniel A Salmon, C Raina MacIntyre

Abstract

Background: Each year tens of thousands of Australians become ill with influenza, resulting in thousands of severe infections that require hospitalisation. However, only 40% of adults receive the annual influenza vaccine. We surveyed Australian adults to provide up to date, population-specific data on the predictors and barriers of seasonal influenza vaccination.

Methods: We administered an online survey to a nationally representative sample of Australian adults. We designed survey questions using the theoretical constructs of the health belief model. Using simple and multivariable Poisson regression, we identified attitudes and beliefs associated with influenza vaccination in 2019.

Results: Among 1,444 respondents, 51.7% self-reported influenza vaccination in 2019. We estimated vaccine coverage to be 44% for adults under 45, 46% for adults aged 45 to 64 and 77% for adults aged 65 and over. The strongest individual predictors of self-reported vaccination were believing the vaccine is effective at preventing influenza (APR = 3.71; 95% CI = 2.87-4.80), followed by recalling their doctor recommending the vaccine (APR = 2.70; 95% CI = 2.31-3.16). Common perceived barriers that predicted self-reported vaccination included believing the vaccine could give you influenza (APR = 0.59; 95% CI = 0.52-0.67), believing the vaccine can make you ill afterwards (APR = 0.68; 95% CI = 0.62-0.74) and preferring to develop immunity "naturally" (APR = 0.38; 95% CI = 0.32-0.45).

Conclusion: Although vaccine uptake in 2019 appears to be higher than previous years, there are perceived barriers which may limit uptake among Australians. Tailored interventions are needed to combat widespread influenza vaccine hesitancy, particularly among high-risk groups.

Keywords: Australia; barriers; health belief model; influenza; predictors of vaccination; vaccine hesitancy.

Conflict of interest statement

Dr C Raina MacIntyre is receiving funding from Sanofi for influenza burden of disease research. Dr Daniel Salmon has had consulting and/or grant support from Merck, Walgreens and Pfizer. Mallory J Trent has no competing interests to declare.

© 2021 The Authors. Influenza and Other Respiratory Viruses Published by John Wiley & Sons Ltd.

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Source: PubMed

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