Lima, M. da S., Couto, J.F., Galdino, C.V., Almeida, E.G.R., Ferraz, C.R. and Oliveira, N.M. de 2022. Challenges in search of safety in vaccine coverage in children up to two years old . Global Academic Nursing Journal. 3, 4 (Dec. 2022), e304. DOI:https://doi.org/10.5935/2675-5602.20200304.