The text mainly tells us about ......      There is currently no vaccine to prevent 2019-nCoV infection. A coronavirus is a type of common virus that infects your nose, sinuses, or upper throat. There is no vaccine for coronavirus. To help prevent coronavirus infection, do the same things you do to avoid the common cold. The best way to prevent infection is to avoid being exposed to this virus.     There are some steps to prevent coronavirus infection. First, wash your hands thoroughly with soap and warm water or with an alcohol-based hand sanitizer. Then, keep your hands and fingers away from your eyes, nose, and mouth. Last but not least, avoid close contact with people who are infected.     If you have cold-like symptoms. you can help protect others by doing these steps: stay home while you are sick, avoid close contact with others, cover your mouth and nose with a tissue when you cough or sneeze, then throw the tissue in the trash and wash your hands. Clean and disinfect objects and surfaces. Seek medical care right away. Before you go to a doctor's office or emergency room, call ahead and tell them about your recent travel and your symptoms.