The SARS-CoV-2 vaccination campaign in Brazil and the invisibility of science evidences

This paper reflects on the vaccination campaign against COVID-19 in Brazil in light of the consideration of scientific evidence in the decision-making process. Brazil has one of the largest and most complete vaccination programs in the world, the National Immunization Program (Programa Nacional de Imunizações or PNI). Unfortunately, in the current context, with the political interference of the federal government, the PNI lost its role in conducting the vaccination campaign against COVID-19. Despite being a vaccination campaign with a lot of potential and one of the most accepted by the population among countries in the world, it presented many problems and left several gaps in the Brazilian scenario. In this sense, it is essential that the quality scientific evidence produced during this period can guide a constant remodeling of the vaccination strategy. Four points deserve to be highlighted: 1) the interval between doses; 2) the interchangeability between vaccines; 3) vaccination in children and adolescentes; and 4) the need for better evidence to define the vaccination strategy in certain groups and age groups.