Burden of Human Metapneumovirus Infection in Young Children

The inpatient and outpatient burden of human metapneumovirus (HMPV) infection among young children has not been well established.We conducted prospective, population-based surveillance for acute respiratory illness or fever among inpatient and outpatient children less than 5 years of age in three U.S. counties from 2003 through 2009. Clinical and demographic data were obtained from parents and medical records, HMPV was detected by means of a...