Population genetic parameters estimated for coding regions of the U.S. CMV isolates using the DnaSP and MEGA programs.

1

Total number of segregating sites.

2

Total number of mutations.

3

Nucleotide Diversity, average pairwise nucleotide difference per site.

4

Mutation rate estimated from S.

5

The average number of pairwise differences per synonymous site.

6

The average number of pairwise differences per non-synonymous site.

7

dS and dN were estimated by Kumar method.