The cross-border network can be understood as a process of effective articulation and collaboration between researchers and university institutions in the three countries that form the triple border between Brazil, Colombia, and Peru. Its fundamental objective is to systematize information, research, monitor, and publicize results on the pandemic in a joint way, that is, to think of these localities and border municipalities of the three countries as a single cross-border region. This perspective of research and data analysis aims to break with the methodological nationalism so present in research in international border areas. This poses a number of challenges in systematizing joint information, as the institutions of each nation-state develop different methodologies and different time frames for the publication of official data, in addition to problems of underreporting in some cases. These difficulties became very present in the process of producing bulletins from covid 19 in the region, as evidenced here during the dialogue with the researchers. [ABSTRACT FROM AUTHOR]