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Published ahead of print on September 10, 2004, doi:10.1164/rccm.200406-781OC
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American Journal of Respiratory and Critical Care Medicine Vol 170. pp. 1197-1203, (2004)
© 2004 American Thoracic Society
doi: 10.1164/rccm.200406-781OC

Original Article

Lower Respiratory Viral Illnesses

Improved Diagnosis by Molecular Methods and Clinical Impact

Jorge Garbino, Margaret W. Gerbase, Werner Wunderli, Christelle Deffernez, Yves Thomas, Thierry Rochat, Beatrice Ninet, Jacques Schrenzel, Sabine Yerly, Luc Perrin, Paola M. Soccal, Laurent Nicod and Laurent Kaiser

Division of Infectious Diseases; Central Laboratory of Virology, Division of Infectious Diseases; Division of Pulmonary Medicine; Central Laboratory of Bacteriology, Division of Infectious Diseases; and Clinic of Thoracic Surgery, University Hospitals of Geneva, Geneva, Switzerland

Correspondence and requests for reprints should be addressed to Laurent Kaiser, M.D., Department of Medicine, Division of Infectious Diseases, Central Laboratory of Virology, University Hospitals of Geneva, 24, Rue Micheli-du-Crest, 1211 Geneva 14, Switzerland. E-mail: laurent.kaiser{at}hcuge.ch

We assessed the frequency and the potential role of respiratory viruses on disease outcomes in hospitalized patients and lung transplant recipients who underwent a bronchoalveolar lavage (BAL) for an acute respiratory infection. BAL specimens (148) were analyzed by reverse transcription-polymerase chain reaction for the presence of 11 different viruses, as well as Mycoplasma pneumoniae, Chlamydophila pneumoniae, and Legionella pneumophila. Respiratory viruses were identified in 34 of 117 BAL specimens (29%) obtained in patients with a suspected respiratory infection and in only 2 of 31 control subjects (7%) (p < 0.01). M. pneumoniae was identified in five additional cases. Only 30% of cases that were virus positive by molecular methods were also positive by cell culture analysis. Rhinovirus was the most frequently identified virus (56% of cases) followed by respiratory syncytial virus (27%). In lung transplant recipients, the rate of viral infections was 55% in cases with respiratory symptoms compared with only 4% in control subjects (p < 0.001). In these cases, respiratory viral infections were associated with significant lung function abnormalities. By using reverse transcription-polymerase chain reaction assays, we frequently identified respiratory viruses in BAL specimens of patients hospitalized with lower respiratory tract infections. These viruses were associated with high morbidity, particularly in lung transplant recipients.

Key Words: bronchoalveolar lavage • lung transplantation • respiratory syncytial virus • respiratory viruses • rhinovirus




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