Factors influencing the uptake of influenza vaccine vary among different groups in the hard-to-reach population

Khai Lin Kong, Sandy Chu, Michelle L. Giles

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)


Objective: This report describes a mobile outreach influenza immunisation program for vulnerable populations in a resource-rich setting. It explores vaccine recipients’ demographics, comorbidities and vaccination histories, and the factors influencing their decision to receive vaccine during outreach. Methods: Teams of nurse immunisers visited and provided influenza vaccines to clients from 21 sites (18 community centres for migrants, refugees and the homeless; and three outpatient clinics). Risk factors for severe influenza, vaccination histories and perceived barriers and facilitators to vaccines were collected from vaccine recipients. Results: A total of 1,032 vaccine recipients participated in the survey with responses collected from April to October 2018. Of these, 54% reported at least one risk factor for severe influenza. Sixty per cent of recipients had not received an influenza vaccine in 2017, with most of them reporting ‘not worried about influenza’ as a reason. Pregnant participants most frequently reported a healthcare provider’s recommendation as the reason to receive the vaccine. Conclusion: An outreach program comprising of a means of taking vaccines to the population was a successful strategy to deliver influenza vaccines to high-risk populations. It needs to be considered in the full range of delivery models to improve influenza vaccine coverage, even in resource-rich settings. Implication for public health: Strategies reaching out to vulnerable populations are crucial to maximise vaccine uptake.

Original languageEnglish
Pages (from-to)163-168
Number of pages6
JournalAustralian and New Zealand Journal of Public Health
Issue number2
Publication statusPublished - 1 Apr 2020


  • hard-to-reach population
  • immunisation
  • influenza
  • outreach programs
  • vaccine uptake

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