Airborne Transmission of the SARS-CoV-2 Delta Variant and the SARS-CoV-2 Omicron Variant

An extensive study on the airborne transmission of respiratory viruses was published recently. The various kinds discussions, including history and scientific mechanisms behind viral aerosols were summarized in study. However, key experimental results interpreted inadequately. understanding pointed toward an inappropriate direction for studies COVID-19 pandemic. In this letter, two critical points from point view aerosol sciences are discussed against viruses. generation mechanism aerosols, important is load. average loads hosts infected with SARS-CoV-2 Delta variant unprecedentedly high, therefore must be considered load fluids, rather than preference virus small particles deep tracts, essential generation. addition, if novel Omicron satisfies fundamental conditions universal principles rapidly spreading viruses, needs to considered.