Figure 3.

Median-joining networks based on S, M, and L segment sequences of Puumala virus strains obtained from bank voles (Myodes glareolus) sampled in the region of Osnabrück, Germany. Circles indicate PUUV sequence types, and colors indicate the trapping localities of M. glareolus. Circle sizes are proportional to the number of individuals sharing that sequence type. Numbers near the branches indicate how many substitutions separate the sequence types, and asterisks indicate the number of nonsynonymous substitutions. Branches without numbers represent one mutation.