FIG. 1.

Phylogenetic analysis of hMPV isolates. Nucleotide sequences were determined for the G ORF. The corresponding ORF sequences from previously reported hMPV Canadian (CAN97-83 and CAN98-75) and Dutch (NDL-01) isolates were also analyzed. Phylogenetic analysis was performed using the neighbor-joining method of the MEGA program. Bootstrap proportions were plotted at the main internal branches of the phylogram to show support values. The year in which the isolates was collected is indicated by the first (for example, CAN99-81) or last (for example, 40-02) two numerals in the isolate name.