Cat Sneezing

[angieking]

Hi, hope someone can help.
In the past 2 days my cat has been sneezing alot. He is eaing fine and seems his normal self.

I collected him from the cattery about a week ago (he had been in over Christmas), not sure if he has maybe picked anything up there.

Would could it be??

How long should I leave it before I take him to the vets.

Thanks in advance.