The association between routine immunisation and COVID-19 vaccination in small Island developing states

Cyra Patel, Gizem Bilgin, Andrew Hayen, Martyn Kirk, Akeem Ali, Aditi Dey, Ginny Sargent and Meru Sheel

PLOS ONE, 2025, vol. 20, issue 7, 1-21

Abstract: Objectives: Understanding the link between routine immunisation (RI) performance and vaccination during an epidemic can provide insights on health systems resilience and investments to strengthen health systems. We examined the relationship between RI performance and COVID-19 vaccination coverage in small island developing states (SIDS). Methods: We analysed immunisation and health system performance data in 55 SIDS. Our primary outcome was COVID-19 vaccination coverage at four timepoints (June 2021, December 2021, June 2022 and December 2022). We examined associations with coverage of six childhood immunisations (5-year mean annual coverage for 2015–2019), pandemic-related disruptions to RI, new vaccine introductions, health system performance measures, and economic and demographic characteristics. We calculated Spearman correlation coefficients (r) with p-values (p

Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0317327

DOI: 10.1371/journal.pone.0317327

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