1. BRASIL. Ministry of Health. Secretariat of Health Surveillance,. National Immunization Program 30 years 1st ed. Brasília, DF: Ministry of Health, 2003.
2. "Diseases once eradicated may return: Learn about four serious consequences of low childhood immunization: Increased exposure to infections and the emergence of new virus variants are among the dangers of vaccine hesitancy," Butantan Portal, 06/11/2022. [Online]. Available: https://butantan.gov.br/noticias/doencas-erradicadas-podem-voltar-conheca-quatro-consequencias-graves-da-baixa-imunizacao-infantil-. [Accessed: 12-Jan-2023].
3. Carvalho MCL, Lioi PC, Godoy VN. "Spatial analysis of polio vaccine coverage between 2015 and 2019 in municipalities of the Vale do Paraíba," Taubaté, São Paulo, 2022.
4. Arroyo L.H et al. "Areas with declining vaccine coverage for BCG, polio, and triple viral in Brazil (2006-2016): Regional heterogeneity maps," cadernos de saúde pública, 2020.
5. Oliveira GCCF et al. "Childhood vaccination coverage for hepatitis A, triple viral, and varicella: Temporal trend analysis in Minas Gerais, Brazil," Brazilian Journal of Epidemiology, 2022.