Molecular Detection of Persistent Francisella tularensis Subspecies holarctica in Natural Waters
Figure 2
Stacked bar graph showing numbers of positive (black) and negative (light grey) samples during the sampling period (2003–2005) in Ljusdal (a) and Örebro (b). The percentages of samples positive for F. tularensis are shown. (sur., water samples; sed., sediment samples).
