Airborne transmission of respiratory viruses User shallah, in the Infectious Disease News subreddit, 04 Nov 2021
Airborne transmission of respiratory viruses User mnbvcxz123, in the Novel Coronavirus (COVID-19) subreddit, 28 Aug 2021
Airborne transmission of respiratory viruses User Griffinchair, in the Covid19_ireland_info subreddit, 27 Aug 2021
Airborne transmission of respiratory viruses | Science (xpost to r/coronavirus) User death_of_flats, in the CoronavirusDownunder subreddit, 27 Aug 2021