Exploring electronic health records to estimate the extent of catch-up immunisation and factors associated with under-immunisation among refugees and asylum seekers in south east Queensland

Abstract

Background: Australia is one of the leading countries resettling people from refugee-like backgrounds. Catch-up immunisation is a key priority in this cohort. However, few studies have included asylum seekers and the adult age group in their study sample. In addition, Electronic Health Records (EHR) has recently been recognised as a vital tool in big data analysis with the capacity to contribute to informed strategic decision making. As such, the main aim of this study is to explore EHR routinely used in a specialised refugee clinic in South East Queensland to estimate the extent of catch-up immunisation and assess the factors associated with under-immunisation among refugees and asylum seekers.

Methods: A quantitative study involving a secondary data analysis on a pre-existing dataset was undertaken. Relevant data was extracted from the EHR in the clinic. SPSS was used to perform Statistical data analysis.

Results: The majority of clients originated from Papua New Guinea, followed by Iran and Afghanistan. When assessing the uptake of catch-up immunisations among refugees and asylum seekers, MMR (Measles-Mumps-Rubella), Polio and DTP (Diphtheria-Tetanus-Pertussis) had the highest uptake, while HPV (Human Papilloma Virus), Pneumococcal and Hib (Haemophilus influenza type b) immunisations had the lowest uptake. Binary logistic regression revealed that the younger patients, the refugees (compared to asylum seekers) and those with a longer residential duration in Australia are at a higher risk of being under-immunised.

Conclusion: This study indicates that the broader group of immigrants, and in particular refugees and asylum seekers, do not represent a homogenous group in terms of immunisation coverage, and that each cohort should be carefully considered during immunisation interventions and strategies. This will be particularly important during targeted health promotions and future immunisation programs in this cohort.

Keywords: Catch-up immunisation; Digital Health; Electronic Health Records; Migrant Health; Refugee; Vaccination.