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Complex differences in infection rates between ethnic groups in Scotland: a retrospective, national census-linked cohort study of 1.65 million cases

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DOI

Author(s)

L D Gruer, G I Cézard, L A Wallace, S J Hutchinson, A F Douglas, D Buchanan, S V Katikireddi, A D Millard, D J Goldberg, A Sheikh, R S Bhopal

School/Research organisations

Abstract

Background 
Ethnicity can influence susceptibility to infection, as COVID-19 has shown. Few countries have systematically investigated ethnic variations in infection. 
Methods 
We linked the Scotland 2001 Census, including ethnic group, to national databases of hospitalizations/deaths and serological diagnoses of bloodborne viruses for 2001–2013. We calculated age-adjusted rate ratios (RRs) in 12 ethnic groups for all infections combined, 15 infection categories, and human immunodeficiency virus (HIV), hepatitis B (HBV) and hepatitis C (HCV) viruses. 
Results 
We analysed over 1.65 million infection-related hospitalisations/deaths. Compared with White Scottish, RRs for all infections combined were 0.8 or lower for Other White British, Other White and Chinese males and females, and 1.2–1.4 for Pakistani and African males and females. Adjustment for socioeconomic status or birthplace had little effect. RRs for specific infection categories followed similar patterns with striking exceptions. For HIV, RRs were 136 in African females and 14 in males; for HBV, 125 in Chinese females and 59 in males, 55 in African females and 24 in males; and for HCV, 2.3–3.1 in Pakistanis and Africans. 
Conclusions 
Ethnic differences were found in overall rates and many infection categories, suggesting multiple causative pathways. We recommend census linkage as a powerful method for studying the disproportionate impact of COVID-19.
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Details

Original languageEnglish
JournalJournal of Public Health
Early online date22 Jan 2021
DOIs
Publication statusE-pub ahead of print - 22 Jan 2021

    Research areas

  • Public Health, Environmental and Occupational Health, General Medicine

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