Agree with the other posts. Sounds like the URI is still present. If the vet gives you pills for it, for 10 days, ask for enough for 14 days! I have one kitty who just can't get clear of a URI with the 10 day dose! Vita is now 10, been this way all her life. fortunately, she only gets them once every few years; I just have to remember to ask for the extra pills.