The spread of COVID-19 between humans is being driven by droplet transmission
The virus is transmitted from a sick person to a healthy person through respiratory droplets when the sick person coughs or talks close to another person.
Current diagnostic tests have yielded positive results from a variety of specimens including throat swabs from asymptomatic people and feces.
These positive results are not a conclusive indication that people are contagious. People may have been exposed and infected but are NOT necessarily transmitting the disease. More investigations into potential other routes of transmission are ongoing.
What has been reported so far it that the main driver of transmission is droplet transmission from people with symptoms.