I have a girl that is due to whelp in 2 weeks. Two other girls here started coughing yesterday. I Googled and see KC lasts 2-3 weeks. Now I worry that the pregnant girl will get it too. What can I do to protect her and the puppies, once they arrive?

Not sure that there is anything you can do to prevent it. KC is highly, highly contagious. In a similar situation, my girl actually got the KC and was largely recovered when she whelped. The puppies did not get sick. But we had contacted Jean Dodds and gave puppies fresh-frozen plasma. Don't know if it helped or not. Made me feel better.