When I first started out as an RN (1989), every baby that was admitted to the hospital during the winter would have a nasal culture for RSV (respiratory virus). Most would test positive, and if they did, they were subjected to 18 hours a day/5 days of Ribavirin, that was delivered via a mist inside an "oxygen tent". Most that were being treated also needed frequent albuterol nebulizer treatments (although wheezing is common in some children with RSV, I often wondered how much of the wheezing was from the Ribavirin). When you walked down the hall, it looked like a major fog in the hallway. Also, we couldn't wear our contacts, as the Ribavirin ruined them. Eventually, they have totally done away with Ribavirin as a treatment for RSV, and it's now reserved for Hep C and Hanta Virus.