Table 1.

Known Transmission Routes of COVID-19/SARS-CoV-2

Factors	Available Information
Respiratory droplets	►Through coughs, sneezes, or ordinary talk. Worryingly, detection of viral loads in the upper respiratory tract suggests potential for pre- and ogliosymptomatic transmission
Contact transmission	►From object contaminated with the virus and subsequent touch their mouth, nose, or eyes.
Aerosol transmission	► As the virus-containing aerosol may reside for hours in a relatively closed environment, respiratory droplets mix into the air, forming aerosols and may cause infection when inhaled high doses of aerosols into the lungs.
Possibly via fecal-oral	►Transmission through the gastrointestinal tract is also claimed from the point of view of abdominal discomfort and diarrhea symptoms.