from what ive heard on here, anytime theres a risk for an RI, you raise temps and lower the humidity, try going down to 45-50%? and se what happens, but im not sure why it would come on so fast, im not thatexperienced, but im sure someone that is will be in here soon. and also, how much do you trust the breeder? they may have just ben trying to get rid of them real quick and was lucky enough to have it not show symtoms until you left, i hope thats not what hapened but it is possible