Molecular Detection of Persistent Francisella tularensis Subspecies holarctica in Natural Waters

Figure 1

Sampling locations (black triangles), in the Ljusdal and the Örebro area. Roman numerals (I, II) and letters (A, B) indicate sampling points selected for detailed analysis. Waterways are represented in white, urban areas are shaded. Each encircled × shows the probable place of disease transmission for patients infected in 1998–2005 (Ljusdal) and 2003-2004 (Örebro) [31].