Thursday, January 14, 2021

How the Coronavirus Spreads: Infra Red Footage


Environmental & Science Education, STEM, Health, Medicine

Ed Hessler

The Washington Post series (free) on the pandemic posted has an essay on how the coronavirus spreads. 

It includes a video (6m 12s)--using "a military-grade infrared camera capable of detecting exhaled breath. Numerous experts — epidemiologists, virologists and engineers — supported the notion of using exhalation as a conservative proxy to show potential transmission risk in various settings.

Even with this high tech camera, experts interviewed for the story note that "the footage underrepresents the potential risk of exposure from airborne particles. These particles may spread farther or linger longer than the visible exhalation plume, which dissipates quickly to a level of concentration the camera can no longer detect." (my emphasis).

Again: masking is a good idea even when it is inconvenient and it is for me now that winter is here and my nose tends to plug up and drip. Ugh! 

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