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*Asthma
*Respiratory Syncytial Virus Infections

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Clinical Microbiology Reviews, July 2008, p. 495-504, Vol. 21, No. 3
0893-8512/08/$08.00+0     doi:10.1128/CMR.00054-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Epidemiologic, Experimental, and Clinical Links between Respiratory Syncytial Virus Infection and Asthma

Shyam S. Mohapatra* and Sandhya Boyapalle

Division of Allergy and Immunology-Joy McCann Culverhouse Airway Disease and Nanomedicine Research Center, Department of Internal Medicine, University of South Florida College of Medicine, and VA Hospital, Tampa, Florida 33612

Virtually all children experience respiratory syncytial virus (RSV) infection at least once during the first 2 years of life, but only a few develop bronchiolitis and more severe disease requiring hospitalization, usually in the first 6 months of life. Children who recover from RSV-induced bronchiolitis are at increased risk for the development of recurrent wheeze and asthma in later childhood. Recent studies suggest that there is an association between RSV-induced bronchiolitis and asthma within the first decade of life but that this association is not significant after age 13. Despite the considerable progress made in our understanding of several aspects of respiratory viral infections, further work needs to be done to clarify the molecular mechanisms of early interactions between virus and host cell and the role of host gene products in the infection process. This review provides a critical appraisal of the literature in epidemiology and experimental research which links RSV infection to asthma. Studies to date demonstrate that there is a significant association between RSV infection and childhood asthma and that preventing severe primary RSV infections can decrease the risk of childhood asthma.

* Corresponding author. Mailing address: Division of Allergy and Immunology, Department of Internal Medicine, University of South Florida College of Medicine, and James A. Haley Veterans Hospital, 12901 Bruce B. Downs Blvd., Tampa, FL 33612. Phone: (813) 974-8568. Fax: (813) 974-8907. E-mail: smohapat{at}health.usf.edu

Clinical Microbiology Reviews, July 2008, p. 495-504, Vol. 21, No. 3
0893-8512/08/$08.00+0     doi:10.1128/CMR.00054-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



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