1. Covid-19: What do we know about airborne transmission of SARS-CoV-2?
2. Why the WHO took two years to say COVID is airborne
3. World Health Organization. Global technical consultation report on proposed terminology for pathogens that transmit through the air. 2024. https://iris.who.int/bitstream/handle/10665/376496/9789240089181-eng.pdf
4. Covid-19 has redefined airborne transmission
5. Zimmer C. WHO broadens definition of airborne diseases. New York Times 2024 April 18. www.nytimes.com/2024/04/18/health/who-airborne-covid.html