[Covenantor]

Where did you pull those numbers from?

The CDC long standing 3 foot droplet rule exceeds your posted 60cm or about 23in.

The new MIT studies prove that it is complex turbulent event that travels substantial farther than previous assumed and that the mixed particle sizes can an do coalesce and re-coalesce.

Take a look at one of the studies photo sequence.

http://www.washingtonpost.com/news/morning-mix/wp/2014/04/10/new-research-the-common-sneeze-is-a-dangerous-infectious-cloud-cover-your-mouth/

[Covenantor]

The following photo is taken from the Research Group mentioned in the MIT news article and published in The Journal of Fluid Mechanics.

It’s a startling image.

Web site:
https://lbourouiba.mit.edu/image-gallery/sneeze-ejecta-large-droplet-ejecta

Large photo from sequence
2349x1941 2.7mb

https://lbourouiba.mit.edu/sites/default/files/droplet-sneeze-2.jpg

Sneeze Ejecta: Large droplet ejecta

[Prophet2520]

“Where did you pull those numbers from?”

I used your own link. It said

“By using an aerosolized source, HPIV1 was found to infect only 2 of 40 children at a distance of 60 cm”
“Respiratory viruses cause sneezing and coughing, which expel an estimated 107 infectious virions per ml of nasal fluid (18). Nasal secretions can travel at a velocity of over 20 m per second and a distance greater than 3 m (about 10 feet) to contaminate surrounding fomites “

But keep in mind that those test were for actual airborne viruses. Those can stay aloft for very long periods on dust particles.