Parainfluenza Virus Infection of Young Children: Estimates of the Population-Based Burden of Hospitalization

To determine the population-based inpatient disease burden of parainfluenza virus in children <5 years of age.The New Vaccine Surveillance Network (NVSN) enrolled children <5 years of age who were hospitalized with febrile or acute respiratory illnesses. Surveillance hospitals admitted >95% of all hospitalized children from each county. Combined nasal turbinate/throat swabs were tested for parainfluenza virus (PIV), respiratory syncytial virus,...