FIG. 1.

Phylogenetic analysis of F gene fragments of hMPV from 15 cases positive for hMPV by RT-PCR. The tree was constructed by the neighbor-joining method using the Kimura two-parameter model, and bootstrap values were calculated from 1,000 trees. The scale bar indicates the estimated number of substitutions per 20 nucleotides. Shaded boxes denote clusters: two clusters of subgroup A2 and one cluster of subgroup B2.