Fatal neonatal pneumonia caused by adenovirus type 35. Report of one case and review of the literature.

A 3680-g term male neonate developed bilateral bronchopneumonia at 9 days of age. The labor, delivery, and immediate postnatal period had been unremarkable. Despite standard antibiotic therapy, the patient progressed to respiratory failure and died 4 days later. Adenovirus particles were found in oropharyngeal secretions 1 day prior to death. Autopsy revealed an extensive necrotizing bronchiolitis and alveolitis with frequent "smudge cells." Adenovirus was identified by culture, electron microscopy, and in situ DNA hybridization. The adenovirus was serotyped as type 35, which, to our knowledge, has not been previously described in neonatal adenovirus pneumonia.