The airborne transmission delay

The allegation is that a dogma about droplets, inherited from decades-old infection-control convention, kept authorities from acknowledging airborne spread and drove attention to surface cleaning instead of ventilation.

A group of aerosol scientists and engineers pressed the point publicly through 2020, including an open letter signed by 239 researchers in July 2020, and were told the evidence was not conclusive.

Accounts are deliberately not collected here. This entry documents a historical case rather than a circulating remedy.

This one is documented. The WHO stated in March 2020 that the virus was not airborne; it acknowledged aerosol transmission progressively from July 2020 and adopted clearer airborne language in 2021, and its own historians and outside reporting have described the resistance as a failure of an entrenched droplet paradigm rather than of the data. Meanwhile superspreading in choirs, restaurants and buses fitted airborne spread and not droplets. The consequence was real: months of deep-cleaning theatre and too little attention to indoor air. The dissenters were right and were treated as cranks.