1. Wash your hands often with soap and water
2. Use a tissue and cover your mouth when you cough or sneeze
3. Avoid close contact with others such as touching.
The first two are common sense and you should follow them all the time. As for the third one, I will still be hugging my friends and family (unless they have recently been in China or Iran) but I won't be giving out free hugs in the mall any time soon.
So, don't stress. I know the news bulletins can be pretty alarming as they make it sound as if the world is ending. People stockpiling toilet paper isn't helpful either. I'm pretty sure this will blow over soon.