“…6 The fight for the right to the city and the right to housing emerged as a counterpoint to an exclusionary model of urbanization, which over decades of accelerated urbanization absorbed large contingents of poor people, without ever effectively integrating them into cities. 28 In addition to socio-economic problems, one of the dimensions of the fight for the right to the city is the right to a healthy environment, which requires access to sanitation, housing, security, infrastructure and health policies, 29 and as in the favela areas, urban infrastructure is precarious, without decent housing conditions and basic sanitation -water supply, sewage treatment, waste collection and drainage, and where there is frequent water shortage, added to the high population density, number of households and low per capita income are common characteristics of communities, favoring the incidence of diseases, especially those associated with social vulnerability. 2 From the results found in this article, it can be seen that the highest BDSI values are found in the regions of the Complexo do Alemão slums where people of black ethnicity (blacks and browns) predominate, confirming that it is the black and underprivileged populations that bear most of the negative effects of urbanization, confirming studies by Cutter et al, 30 where the authors discuss the variation of vulnerability in time and space, between different social groups.…”