Stop the virus COVID-19
Infection by a respiratory disease such as coronavirus is known to be dominated by saliva.
Laser video images are shown to illustrate that speaking generates saliva droplets that can either be inhaled by others, or land on surfaces where they can be picked up by others in the absence of good hygiene.
Limiting emission of speech generated saliva droplets should be a prime opportunity to stop the pandemic.
Further reading and viewing
Different sounds (56 volunteers)
Social Distancing explained by BBC News
Airborne spread of infectious agents in the indoor environment
Infectious virus in exhaled breath of symptomatic seasonal influenza cases from a college community
Exhaled droplets due to talking and coughing
THE SIZE AND THE DURATION OF AIR-CARRIAGE OF RESPIRATORY DROPLETS AND DROPLET-NUCLEI