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Cover Smart. Do Your Part. Slow the Spread: Video Transcript (Including Description of Visuals)

[0:00 – 0:07] We see a callout box with text that reads, “NOTE: This high-speed visualization illustrates airflow when breathing and coughing. It does NOT show movement of virus particles.”

[0:08 – 0:24] We see a man with safety glasses on, sitting in front of a spherical mirror. He talks and coughs, and the mirror shows air propelling outward from his nose and mouth in slow motion in a powerful stream. Text reads, “The virus causing COVID-19 spreads mainly person to person through droplets emitted by infected people when they talk, cough, or sneeze. You can be infected and spread the virus but have no symptoms. (cdc.gov)”

[0:25 – 0:36] We see the man in front of a spherical mirror wearing a bandanna over his nose and mouth. He breathes and the mirror shows a soft plume of air escaping outward from the bandanna and rising. Text reads, “Wearing any face covering over your mouth and nose is better than none at all. This protects others and may also protect you. 

[0:37 – 0:42] We see the man in front of a spherical mirror wearing a homemade, cloth face mask fitting loosely over his nose and mouth. He breathes and the mirror shows a soft plume of air escaping outward from the cloth mask and rising. Text reads, “A loose fitting-face covering…”

[0:43 – 0:51] We see the man in front of a spherical mirror wearing a homemade, cloth face mask fitting loosely over only his mouth. He coughs and the mirror shows air propelling outward from his nose in a powerful stream. Text reads, “Or one worn below the nose is much less effective than one that fits snugly.”

[0:52 – 1:00] We see the man in front of a spherical mirror wearing a homemade, cloth face mask fitting snugly over his nose and mouth. He breathes and the mirror shows a soft plume of air escaping the cloth mask and rising. Text reads, “A well-fitting, breathable face covering made with a few layers of tightly woven fabric protects best.”

[1:01 – 1:07] We see four frames of the man in front of the spherical mirror. In the top two frames, he wears no face covering and air escapes from his mouth and nose and is propelled forward when he speaks and coughs. In the bottom two frames, he wears loose and snugly fit cloth face coverings and soft plumes of air escape outward from the cloth masks. Text reads, “Cover smart. Do your part. Slow the spread.”

[1:08 – 1:14] We see callout boxes with text that reads, “Credit, Schlieren Optical System by Matthew Staymates, Produced by NIST Public Affairs 2020,” and includes the link to CDC’s Use of Cloth Face Coverings to Help Slow the Spread of COVID-19 resource.

The high-speed visualizations illustrating a flow when breathing and coughing using homemade masks.
Created June 25, 2020