Processes of spatial mobility among the Mbya are of interest in anthropological and ethnobiological studies, as these processes are related to transformations in the landscape and the environment. Despite this, ethnographic literature usually focuses itself on the mobility of Guaraní communities from the perspective of population dynamics on a regional scale.Our research among two Mbya-Guaraní communities in the Argentinean province of Misiones has enabled us to recognize patterns of mobility on a micro-scale. Certainly, the mobility of adult members of these communities as they perform hunting and gathering activities delimit spaces of individual use. We consider the different pathways as "signatures in landscape", resulting from processes of spatial mobility inherent to those activities Taking into account the gathering and circulation of medicinal plants for treatment of gastrointestinal illnesses, we have been able to identify different pathways inherent in their search, towards the monte or other spaces away from de settlement. The design and construction of the pathways is determined by the specific personal knowledge of individuals who search for these valuable resources.Using both strategies of direct observation -as members of the community manipulate different resources during these search and gathering trips -and interviews, we have been able to gather and interpret significant information on the strategies used by the Mbya to domesticate the monte areas.As a consequence of our approach we suggest that the landscape design resulting from these trips should not be considered a consensual or collective strategy of the whole community; it is rather the result of the daily strategies of individuals, which involves the selection of resources mainly based on each individual's knowledge and interests.

En este artículo se explora la mediatización de las epidemias como objeto de conocimiento público, mediante un análisis de contenido de las noticias sobre la gripe A (H1N1) de 2009 en Argentina, Estados Unidos y Venezuela. Los resultados indican que los periódicos siguieron los esfuerzos de las autoridades sanitarias de movilizar la atención pública y, simultáneamente, contener la alarma exagerada y los discursos sobre el virus.

This paper aims to analyze the process of medicalization in current societies, starting from the description of the way in which medicine gradually appropriated various aspects of everyday life that were once part of the life cycle of people. At the theoretical level, we are based on authors such as Descola and Latour, who problematize the dichotomy between Nature and Culture, and propose the need to think from a superior episteme. Methodologically, this theoretical proposal enables an analysis of the medicalization that can illuminate what is hidden in the discourse and biomedical practices: the sociocultural, political and economic processes that are part of these "objects" of Medicine. From this perspective, the presentation of them as scientific facts, objectively isolatable and manipulable by medical science, is in crisis. Thus, our analysis, based on the concept of "quasi-objects" or "hybrids", problematizes such objectification, while providing critical tools to reflect on the medicalization of life in today's societies.