*4.1.1.3 Nature of the virus and methods of transmission*

Current research demonstrates that SARS-CoV-2 virus is spread through personto-person and person-to-surface-to-person. The primary mode of transmission of SARS-CoV-2 and similar coronaviruses is through aerosols emitted into the air through an infected person during not only coughing but also talking and breathing, in particular during physical exercise. The duration of the suspension of the aerosol, which can range from 0.5 to 3 hours, is subject to droplet size and humidity of the ambient air. The dispersal range of these aerosols is governed by a combination of droplet size, airflow, and humidity. Research to establish the survival of the SARS-CoV-2 virus in a variety of conditions indicates that it may remain viable for hours to days on different surfaces [2].
