Figure 1. Distribution of hantavirus pulmonary syndrome (HPS) cases in Argentina, 1995–2008. A) The 5 Argentine epidemiologic regions and percentages of HPS cases in each one are shown. B) Six of the 18 ecoregions (18) represented by the colors indicated in the reference key; percentages of HPS cases in each ecoregion are shown. Location of HPS cases is represented approximately by point density. Total no. of cases analyzed: 692; confirmed cases of person-to-person transmission were excluded from this analysis. NOA, Northwest; NEA, Northeast.