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stoptheviruscovid19.github.io

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

MIT sneeze lab

MIT sneeze video

Dependence on loudness

Different sounds (56 volunteers)

Singapore expert

CDC flu transmission

Voice loudness & droplets

Social Distancing explained by BBC News

Airborne spread of infectious agents in the indoor environment

Respiratory Protection for Healthcare Workers in the Workplace Against Novel H1N1 Influenza A: A Letter Report (2009)

Infectious virus in exhaled breath of symptomatic seasonal influenza cases from a college community

Exhaled droplets due to talking and coughing

Characterization of expiration air jets and droplet size distributions immediately at the mouth opening

THE SIZE AND THE DURATION OF AIR-CARRIAGE OF RESPIRATORY DROPLETS AND DROPLET-NUCLEI

Simple Respiratory Protection—Evaluation of the Filtration Performance of Cloth Masks and Common Fabric Materials Against 20–1000 nm Size Particles