Centre Hospitalier Universitaire de Québec and Laval University, Sainte-Foy, Quebec City, Canada. guy.boivin@crchul.ulaval.ca
Abstract:
We analyzed 64 human metapneumovirus strains from eight countries. Phylogenetic analysis identified two groups (A and B, amino acid identity 93%-96%) and four subgroups. Although group A strains predominated, accounting for 69% of all strains, as many B as A strains were found in persons >3 years of age.