JAMA (American Medical Association (AMA))
Droplet transmission occurs when a person is in in close contact (within 1 m) with someone who has respiratory
symptoms (e.g. coughing or sneezing,) and is therefore at risk of having his/her mucosae (mouth and nose) or
conjunctiva (eyes) exposed to potentially infective respiratory droplets (which are generally considered to
be > 5-10 μm in diameter). Droplet transmission may also occur through fomites in the immediate environment
around the infected person. 7 Therefore, transmission of the COVID-19 virus can occur by direct contact with
infected people and indirect contact with surfaces in the immediate environment or with objects used on the
infected person (e.g. stethoscope or thermometer)....
7. Ong SW, Tan YK, Chia PY, Lee TH, Ng OT, Wong MS, et al. Air, surface environmental, and personal protective equipment contamination by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from a symptomatic patient. JAMA. 2020 Mar 4 [Epub ahead of print].