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Abstract
Respiratory syncytial virus (RSV) is a common cause of respiratory tract infections. In severely immunosuppressed patients RSV can cause significant morbidity and mortality. The only FDA-approved drug for RSV is aerosolized ribavirin. Given the high morbidity and mortality in high-risk populations and inconsistent results with aerosolized ribavirin, new strategies for prevention and treatment of RSV are being sought. Palivizumab is an RSV-specific monoclonal antibody. A randomized, double-blind, placebo-controlled multicenter study showed significant reduction in hospitalization rates among children at high risk of RSV infection who had been given prophylactic palivizumab; these findings led to palivizumab's approval by the FDA in June 1998. Palivizumab also has a role in prevention of severe respiratory tract infections in high-risk infants. In immunocompromised patients, palivizumab has an excellent safety profile and may be beneficial in the prevention and treatment of RSV infections; however, clinical trials are needed to determine its effectiveness. In this article, we review the role of palivizumab in prevention and treatment of RSV infections in immunocompetent and immunocompromised patients.