Airborne Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2): What We Know

Clin Infect Dis. 2021 Nov 16;73(10):1924-1926. doi: 10.1093/cid/ciab039.


We examine airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) potential using a source-to-dose framework beginning with generation of virus-containing droplets and aerosols and ending with virus deposition in the respiratory tract of susceptible individuals. By addressing 4 critical questions, we identify both gaps in addressing 4 critical questions with answers having policy implications.

Keywords: COVID-19; SARS-CoV-2; airborne transmission.

MeSH terms

  • Aerosols
  • COVID-19*
  • Humans
  • Respiratory System
  • SARS-CoV-2
  • Viruses*


  • Aerosols