I agree with garner and Noweia.
When I got my pup out of a rescue centre in mid December she had kennel cough (which lasted about 5 weeks unfortunately). Now I want to take her to socialisation classes and my vet has told me that she will need to be vaccinated for kennel cough.
Also, as far as I am aware, many kennels won't accept a dog that hasn't been vaccinated against kennel cough so I would check it out with your vet as soon as possible because as garner says, you should have it done 2-3 weeks in advance.
Good luck.