Just take vitamin C pills daily to keep your immune system up and wash your hands and you will most likely be fine. You don't need no shot, simple precautions is all you need.
Also, I heard Cayenne pepper powder helps. Put a teaspoon in a glass of water and drink that once or twice a day, it helps with a lot of things. I drink that when I have headaches instead of taking tylenol and it works like a charm... or if I have chest pains and shit, idk how it works but it does.