| high seroprevalence of human metapneumovirus among young children in israel. | exposure to the newly discovered human metapneumovirus (hmpv) during the first 2 years of life was studied by longitudinal serological analysis in 40 healthy children in southern israel. the seropositivity rate decreased to a minimum by age 13 months and increased to 52% by age 24 months. evidence of new infection was detected in 13%, 23%, and 55% of children by ages 7, 13, and 24 months, respectively. the high exposure rates suggest that hmpv may be an important cause of community-acquired resp ... | 2003 | 14673765 |