Acute respiratory infection (ARI) is the leading cause of hospitalization and death in children <5 years of age worldwide outside the post-natal period.
ARI causes a significant number of hospitalizations among children yearly.
The viral etiologies and their distribution is poorly documented in most developing countries.
In a 2007 study in Amman, Jordan, we enrolled 743 of 803 (93%) eligible hospitalized children aged <5 years old with respiratory symptoms and/or fever to determine the etiology of their viral ARI by polymerase chain reaction (PCR).
We detected at least one virus in 88% of the subjects.
RSV (64%) and rhinoviruses (23%) were most frequently detected.