Coronavirus belongs to the order Arboviridae, family Coronaviridae, genus Coronavirus, is a class of RNA viruses with capsid and linear single-stranded positive stranded genome, which is a large class of viruses widely existed in nature. It mainly causes respiratory and intestinal diseases in humans and animals, human coronavirus is more sensitive to heat, the virus is moderately stable at 4 ℃ in the appropriate maintenance solution, -60 ℃ can be stored for several years, but as the temperature rises, the virus resistance decreases, the more suitable culture temperature of 33 ℃ ~ 35 ℃, it causes human disease is mainly respiratory infections, second only to rhinovirus. At present, there is no good control of coronavirus, because the virus is not easy to culture, the epidemic type has not been determined, and the body’s reaction pattern after infection is not clear enough, so it can not be prevented by vaccine. Nowadays, non-specific protective measures are mostly adopted for coronavirus infection, i.e., self-protective measures in daily life, as follows: 1. Wash your hands diligently, either by using hand sanitizer containing alcohol or by rinsing with soap and running water. Especially when visiting farms, markets, barns or contact with other animals, wash your hands before and after contact, and avoid direct contact with sick animals; 2, in the epidemic season, the elderly and chronically ill patients try to avoid going to crowded places, avoid contact with respiratory infections, such as the need to go out and pay attention to wearing a surgical mask; 3, maintain good respiratory hygiene habits, cough or sneeze, use tissues, sleeves, etc., to avoid contact with patients. 3, maintain good respiratory hygiene habits, when coughing or sneezing, use tissues, sleeves, etc. to cover the mouth and nose, wash hands after coughing or sneezing, and try to avoid touching the eyes, nose or mouth; 4, animal food should be properly handled through cooking or pasteurization to ensure safe consumption, and should also avoid cross-infection with undercooked food during processing; 5, pay attention to self-health monitoring, if fever occurs with acute respiratory symptoms such as coughing, dyspnea, and vomiting, Diarrhea and other symptoms of intestinal diseases, and at the same time may have had recent contact with viral infections, then further arrangements to the fever clinic, by the Division of Infectious Diseases or respiratory medicine professional physician to make professional judgments, such as the consideration of the patient for the suspected, the specimen will be sent to the CDC to carry out the pathogenicity of the test in order to confirm the diagnosis or exclusion. Source: Dr. Yurai Reference: China Center for Disease Control and Prevention (CDC) “What you should know about Middle East Respiratory Syndrome…”. What You Need to Know About Coronavirus Infections Public Protection Guidelines for Novel Coronavirus Infections with Pneumonia.