Journal
BMJ OPEN
Volume 12, Issue 11, Pages -Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2021-050211
Keywords
Paediatric infectious disease & immunisation; Geographical mapping; Community child health; Epidemiology; Public health
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This study aimed to assess the spatial distribution, trends, and determinants of crude full vaccination coverage (FVC) in children aged 12-59 months in Peru between 2010 and 2019. The study found that although FVC has increased, it remains below the recommended threshold. The increase in FVC was mainly attributed to changes in the effects of population characteristics. There is high heterogeneity and the presence of high-risk clusters across different regions in Peru.
ObjectiveTo assess the spatial distribution, trends and determinants of crude full vaccination coverage (FVC) in children aged 12-59 months between 2010 and 2019 in Peru.Design, setting and analysisA cross-sectional study based on the secondary data analysis of the 2010 and 2019 Peruvian Demographic and Health Surveys (DHSs) was conducted. Logit based multivariate decomposition analysis was employed to identify factors contributing to differences in FVC between 2010 and 2019. The spatial distribution of FVC in 2019 was evaluated through spatial autocorrelation (Global Moran's I), ordinary kriging interpolation (Gaussian process regression) and Bernoulli-based purely spatial scan statistic.Outcome measureFVC, as crude coverage, was defined as having completely received BCG; three doses of diphtheria, pertussis, and tetanus, and polio vaccines; and measles vaccine by 12 months of age.ParticipantsA total of 5 751 and 14 144 children aged 12-59 months from 2010 and 2019 DHSs, respectively, were included.ResultsFVC increased from 53.62% (95% CI 51.75% to 55.49%) in 2010 to 75.86% (95% CI 74.84% to 76.85%) in 2019. Most of the increase (70.39%) was attributable to differences in coefficients effects. Family size, visit of health workers in the last 12 months, age of the mother at first delivery, place of delivery and antenatal care follow-up were all significantly associated with the increase. The trend of FVC was non-linear and increased by 2.22% annually between 2010 and 2019. FVC distribution was heterogeneous at intradepartmental and interdepartmental level. Seven high-risk clusters of incomplete coverage were identified.ConclusionsAlthough FVC has increased in Peru, it still remains below the recommended threshold. The increase of FVC was mainly attributed to the change in the effects of the characteristics of the population. There was high heterogeneity across Peruvian regions with the presence of high-risk clusters. Interventions must be redirected to reduce these geographical disparities.
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