well my son has rsv, but not bad enough to be emitted (thank God!) They sent us home with a breathing medicine he has to take ever 4 to 6 hours for two days then just as needed from there. He has a appointment Monday to get his shots and a check up on his rsv. Good thing the rock n plays only take one battery because he's been fighting it so bad and I've Been so tired I keep forgetting to shut it off some nights lol.