Ribavirin is the drug that is normally given to treat upper respiratory infections caused by RSV. The drug is only effective when inhaled as an aerosol. This treatment requires the patient to be in a tent and inhale the medication. The usual method for administering this drug has been to inhale the medication continuously over 18 hours. In this study, the same total dose of the medication will be used, however, treatment will be for 3 hours every 8 hours.