my son routinly cultured this when he was youger, it was never treated. The thing I always have found a bit off, is they say kids w/ CF coughs are not contagious...but I swear I contracted Hflu from him and got epiglotitis, which for an adult is painful, but not severe as it would be for a baby, who they could die from. I also find it a little odd that they are vacinated w/ HIB, but still can be carriers of it? But then I realized there are many strains of H Flu