Novel coronavirus infection causing dry cough is a viral pneumonia and may be accompanied by headache, fever, malaise, and even progressive respiratory distress. Some patients have mild symptoms at first and do not develop fever. The disease can be spread from person to person. Avoiding close contact with patients, avoiding seafood markets, live poultry markets or farms, washing hands regularly, keeping indoor air circulation and paying attention to food safety and hygiene, not eating raw or undercooked milk, eggs and meat, etc. can reduce the risk of infection.