[Choir] sing along

[Richard Riley]

Dear All,

It's good to feel the pulse of your desire to sing together!

Amazingly, "viral transmission via inhalation of small airborne respiratory
droplets," cited in the May, 2020 paper *Statement of Work: Aerosol
Generation from Playing Band Instruments, Singing and Performing and Risk
of Infectious Disease Transmission
<https://www.nfhs.org/media/3812357/risk-of-transmission-instrument-playing-vsfinal.pdf>*
is
still assessed by the so-called Wells-Riley model, named after my father,
my Uncle Ed, and their teacher William Wells.

This from another paper: "In the preface to his 1955 masterwork, “Airborne
Contagion and Air Hygiene: An Ecological Study of Droplet Infections”
published by Harvard University Press,... Wells attributes the crucial
distinction between droplet nuclei (airborne inhalable dried residua of
larger respiratory droplets) and germ-laden dust (non-inhalable larger
respiratory droplets) to Richard L. Riley, a medical student working with
him at Harvard at the time."

I am very proud of my dad and uncle, and the fact that the Wells-Riley
model is still one of the ways to assess risk for airborne infection is
pretty amazing. *Please keep that Wells-Riley equation in mind when next
you sing together*!

Dick


P.S. Here's the equation, for your next moment of light party conversation:

[image: Screen Shot 2020-06-13 at 6.52.38 PM.png]
Dick
P=1−exp(−pQτq)


On Fri, Jun 12, 2020 at 8:21 PM Bronwyn Fryer via Choir <
choir at unitarianchurchofmontpelier.org> wrote:

>
> Hi all
>
> I’ve been thinking about trying to do this. If you don’t mind wearing a
> mask when we sing closer than 10’ from one another we might attempt in, say
> a 10-person per time group. Those of you who have been to my house know
> that there is plenty of room to spread around. I can provide mics and
> amplifiers for a few people and guitar accompaniment; it might be fun to do
> rounds and a cappella too if we can hear one another.
>
> If interested, let me know and we can make arrangements.
>
> Love to all.
> Unitarian Church of Montpelier
> Choir email list
> unsubscribe at www.unitarianchurchofmontpelier.org
>
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