Areas with declining vaccination coverage for BCG, poliomyelitis, and MMR in Brazil (2006-2016): Maps of regional heterogeneity

Luiz Henrique Arroyo*, Antônio Carlos Vieira Ramos, Mellina Yamamura, Teresinha Heck Weiller, Juliane de Almeida Crispim, Denisse Cartagena-Ramos, Miguel Fuentealba-Torres, Danielle Talita dos Santos, Pedro Fredemir Palha, Ricardo Alexandre Arcêncio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Immunization is known to be one of the most successful and cost-effective health interventions, resulting in the eradication and control of various diseases in the world. However, Brazil has experienced a worrisome drop in vaccination coverage, associated with the resurgence of various previously controlled or eradicated diseases. This study thus conducted a situational diagnosis weighing Brazil’s different regions and time trends in vaccination coverage in order to identify areas with reduction in vaccination coverage for BCG, poliomyelitis, and MMR. This ecological study collected data on the number of children up to one year of age who had been vaccinated with these three vaccines from 2006 to 2016, according to municipality (county). Data were obtained from the Brazilian Health Informatics Department. A spatial scan was performed, analyzing spatial variations in the time trends for vaccination coverage. Downward trends were seen in the number of immunizations in Brazil, with reductions of 0.9%, 1.3%, and 2.7% per year for BCG, poliomyelitis, and MMR, respectively. Significant decreases were also seen in all five major geographic regions with time trends in the reduction of vaccination coverage. The study evidenced an important reduction in vaccination coverage in recent years, with major heterogeneity between municipalities. Thus, focused attention and strategic planning in keeping with each local area’s characteristics are necessary to address both the reduction of vaccination coverage and the resurgence of vaccine-preventable diseases in Brazil.

Translated title of the contributionAreas with declining vaccination coverage for BCG, poliomyelitis, and MMR in Brazil (2006-2016): Maps of regional heterogeneity
Original languageSpanish
Article numbere00015619
JournalCadernos de Saude Publica
Volume36
Issue number4
DOIs
StatePublished - 2020
Externally publishedYes

Bibliographical note

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© 2020 Fundacao Oswaldo Cruz. All rights reserved.

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