“In order to meet the demand of Brazilian society, which is currently experiencing moments of serious public health crisis, resulting from the COVID-19 pandemic, the IBGE makes efforts to make public, in a preliminary way , the results mapping of subnormal clusters”. “Subnormal agglomerates” is the terminology used by the IBGE, which includes favelas, subdivisions, villas, etc. This effort is very important, considering that the latest data are from the 2010 Census and are obviously out of date. For example, in 2010 there were 3,224,529 households in these “clusters”; in 2019, the number grew to 5,127,746. The main results can be accessed here . Also see here for access to the research database and documentation. In addition to this initiative, the IBGE created a specific page , in which it brings together the “initiatives carried out and actions under development in relation to its studies and research to support efforts to combat Covid-19”.