ArticleRevista brasileira de epidemiologia = Brazilian journal of epidemiology2023
Temporal and spatial distribution of polio vaccine coverage in Brazil between 1997 and 2021.
Article in Revista brasileira de epidemiologia = Brazilian journal of epidemiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed.
- HIV prevalence among persons deprived of liberty in Brazil, 2017-2023: a time series analysis.Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil · 2025Article
- Article
- Parental vaccine hesitancy in Brazil: results from a household survey.Cadernos de saude publica · 2025Article
- Vaccination coverage and delay in vaccination of infants born in 2017 and 2018 in municipalities in the Southern region of Brazil: National Vaccination Coverage Survey 2020.Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil · 2024Article
- Vaccination coverage, barriers and vaccine hesitancy in children up to 24 months old: a population survey in a state capital in the Western Amazon.Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil · 2024Article
Corrections and comments
- Erratum issuedERRATUM.2023
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo analyze the temporal and spatial distribution of polio vaccine coverage in Brazilian states.
methodsAn ecological time series study was conducted using data from the National Immunization Program Information System. The analyzed period was from 1997 to 2021. Joinpoint software was used to calculate the annual percentage change and average annual percentage change through regressions. QGIS 3.10.7 software was used to construct thematic maps. GeoDa 1.20.0.10 software was used to estimate spatial autocorrelation using the Global Moran's Index and Local Moran's Index.
resultsNational vaccine coverage in 1997 was 89.27%, decreasing to 61.32% in 2021. The trend analysis indicated an average annual decrease of 1.5% in polio vaccine coverage in Brazil. Across the country, 17 states showed a statistically significant reduction in the average annual percentage change rate. The highest average reduction rates in vaccine coverage among Brazilian states were observed in Amapá (-3.7%; 95%CI -6.0; -1.4) and Pernambuco (-3.3%; 95%CI -4.0; -2.5). In the spatial analysis, in Moran Global, a positive autocorrelation was identified in the years 2012 to 2021 (p<0.02), with an index value of 0.361, which means that geographically close areas tended to have similar levels of vaccination coverage.
conclusionThere was significant heterogeneity in coverage among states and a strong decrease trend in vaccination rates, which could facilitate the circulation of the poliovirus and pose a threat to the susceptible population.
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