Figure 1From: Prevalence and phylogenetic analysis of tick-borne encephalitis virus (TBEV) in field-collected ticks (Ixodes ricinus) in southern SwitzerlandMap of the 45 sites in Canton Valais, Switzerland sampled for Ixodes ricinus ticks. The six sites where tick populations tested positive for TBEV are named and shown in red. The 39 sites where tick populations tested negative for TBEV are shown in green. The map was made using the QGIS 1.8.0 Lisboa software.Back to article page