[Monitoring inequalities in health: meanings and strengths of information sources].

This paper presents a conceptual analysis of inequalities in healthcare associated with the discussion of dimensions, indicators and data sources that are crucial for understanding major trends within the Brazilian context. From this standpoint, the text emphasizes the importance of in-depth discussions of social inequalities, identifying changes in healthcare conditions using the concept of differential vulnerability and the parameters that should be considered in the quest for strategic information required to draw up, implement, monitor and assess healthcare policies in this area.