[Vegetation analysis and detection of periurban focus of canine piroplasmosis due to Babesia canis in Rhône-Alpes area; ecological basis for map-making].

Dog piroplasmosis is actually expanding at the periphery of the big cities of the Rhone-Alpes area. The authors present the basis of an epidemiological study and insist upon the interest of vegetation analysis in the detection of the contamination sites.