Respiratory syncytial virus (RSV) infection is an important cause of morbid
ity, particularly in prematurely born infants who have had chronic lung dis
ease. Current therapy is essentially supportive. Overall, the results of ra
ndomized trials do not support the use of bronchodilators, corticosteroids
or Ribavirin. Nitric oxide and exogenous surfactant may improve the respira
tory status of those infants who require ventilatory support. Nosocomial in
fection can be reduced by appropriate handwashing. There is no safe and eff
ective vaccine for use in infants. Immunoprophylaxis reduces hospitalizatio
n and requirement for intensive care. Palivizumab, a humanized monoclonal a
ntibody, is preferred to RSV immune globulin as the immunoprophylactic agen
t. Immunoprophylaxis should be reserved for infants at highest risk of seve
re respiratory syncytial virus infection. if this strategy is to be used mo
st cost-effectively.