Novel coronavirus pneumonia is transmitted mainly by droplet transmission and contact transmission, which are the two main routes of transmission. Because coronavirus is found in feces and blood, it is transmitted via aerosol and digestive tract. Droplet and contact transmission are the main transmission routes, such as droplets from coughing and sneezing. Contact with surfaces contaminated by the virus, such as railings and doorknobs in public areas, and droplets from patients can spread the virus, the closer the contact, the greater the possibility of disease, because the density of viral load is higher, more likely to develop, the less close the contact the less likely to develop, no contact may not be disease, so pay attention to protection. Content source: Dr. You Lai