Herbert P. Ludewick*, Yacine Abed†, Nadia van Niekerk*, Guy Boivin†, Keith P. Klugman*‡, and Shabir A. Madhi*
Figure. . . Neighbor-joining trees based on nucleotide sequences from A) the partial F gene and B) the G gene open reading frame from 61 South African human metapneumovirus (hMPV) isolates. The trees were computed with MEGA version 2.1 with the nucleotide Kimura 2-parameters. Bootstrap probabilities for 500 replicas are shown at the branch nodes. Only values of 70% to 100% are indicated. Isolates from South Africa are indicated by RSA, followed by the isolate number and year (e.g., RSA/18/02). The viruses from Canada (CAN97-83, hMPV13-00, CAN75-98, and hMPV33-01) and the Netherlands (NL/1/00, NL/17/00, NL/1/99, and NL/1/94) are prototypes from each subgroup.