Hi L., my name is J. and I am a nurse. The way you test for RSV is by obtaining a swab of the nose. Kylie will not like it when it is done, because it goes all the way back into the nose and should be swabbed for about 30 seconds. I do this a lot!
RSV (Respiratory Syncytial Virus) is more common in infants and children. Some symptoms include low-grade fever and a croupy barking cough. Not all babies who have RSV are admitted. It is to the discretion of the physician. That is all I can pretty much tell you without stepping over my boundries.
Try to keep your baby from very busy,crowded places if at all possible through out the rest of the winter.
Good Luck, Jess