| a 1-year experience with human metapneumovirus in children aged <5 years. | human metapneumovirus (hmpv) is a recently discovered respiratory pathogen. we tested respiratory specimens for the presence of hmpv by reverse-transcription polymerase chain reaction. these specimens were obtained over a 1-year period from children aged <5 years and had negative results by the direct fluorescent antibody test for respiratory syncytial virus, influenza a and b, parainfluenza viruses 1-3, and adenovirus. overall, 54 (8.1%) of 668 individuals tested positive for hmpv. during march ... | 2004 | 15073675 |