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

1<p>Total number of segregating sites.</p>2<p>Total number of mutations.</p>3<p>Nucleotide Diversity, average pairwise nucleotide difference per site.</p>4<p>Mutation rate estimated from S.</p>5<p>The average number of pairwise differences per synonymous site.</p>6<p>The average number of pairwise differences per non-synonymous site.</p>7<p>dS and dN were estimated by Kumar method.</p>