Two epidemics: the yellow fever and a lack of information

This paper presents a brief history of yellow fever origin in Brazil, of the control measures and of the difficulties to the public health guidance to reach the population. It analyzes some cases of rumour propagation, as well as fake information and its often damaging consequences. It points out the need to offer and disseminate reliable sources to professionals and the community, especially through the strengthening of institutions and their areas of social communication. It also highlights the importance of the fieldwork of the primary health care teams, so that they can find people at risk and bring information and vaccines to them