What breed of dog is he?
5 year old, neutered Westie, 22 lbs but he's a larger one so he's not overweight (though he is pushing the normal range for his size)
Thanks for answering my questions.
The 'normal' respiratory rate for a dog is 10-34 breaths per minute...HOWEVER, large breed dogs can be slower and smaller breed dogs can be faster. Add to it the fact that some medications, pain or even just mild discomfort can cause that rate to raise. Since your dog has only been doing it for a short time, I suspect it's due to discomfort from the infection he's got going on.
As long as you don't notice anything unusual with him, such as bluish tinge to lips of gums, lethargy or anorexia, I wouldn't worry about it at this point.