The Common Cold

The common cold which consists of the symptoms; sneezing, coughing, runny nose, may have sore throat. We have the flu shot which prevents us from catching the flu but why isn't there a shot to help fight off the common cold? There are cough medicines, but what if your symptoms don't consist of just a cough or sneezing? You can't mix the medicines that you take for the various symptoms you are experiencing. What if you have a hadache, sore throat, runny nose, sinus congestion, and a cough? You can't mix aspirin with DayQuil, or aspirin with Delsym. So why not invest in a shot that'll  help us fight off the common cold?