<div><div dir="auto">A good explanation from Ed.</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">Ed Hutchinson</strong> <span dir="auto"><<a href="mailto:ehutch@gmavt.net">ehutch@gmavt.net</a>></span><br>Date: Sat, Jun 13, 2020 at 8:23 PM<br>Subject: Re: [Choir] sing along<br>To: Lani Seifert <<a href="mailto:lani.seifert@gmail.com">lani.seifert@gmail.com</a>><br></div><br><br>
<div>
<p>Singers and instrument players huff, puff, and aspirate a lot
more airborne droplets than a person speaking. Musicians breath
deeper into their lungs (where a budding infection may be most
evident), and those pesky percussive bursts with short notes and
aspirated consonants like T D K S V (and probably more) explode
out bursts of spit. Those particles can float in air for a lot
more than ten feet under some circumstances.</p>
<p>We are super spreaders if there is one among us ill but feeling
perfectly fine. <br>
</p>
<p>What ever we do singing wise must be done with excessive caution.
<br>
</p>
<p>Some of the worst outbreaks in the country have resulted from
chorus or choir activity. <br>
</p></div><div>
<div>On 6/13/20 8:04 PM, Lani Seifert via
Choir wrote:<br>
</div>
<blockquote type="cite">
<div>
<div dir="auto">English please?</div>
</div>
<div dir="auto">Please translate this as it relates to Bronwyn’s
possible plan. </div>
<div dir="auto">Sorry to be so dense!</div>
<div dir="auto">Lani</div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Jun 13, 2020 at 7:36
PM Richard Riley via Choir <<a href="mailto:choir@unitarianchurchofmontpelier.org" target="_blank">choir@unitarianchurchofmontpelier.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>Dear All,</div>
<div><br>
</div>
<div>It's good to feel the pulse of your desire to sing
together!</div>
<div> </div>
Amazingly, "viral transmission via inhalation of small
airborne respiratory droplets," cited in the May, 2020
paper <i><a href="https://www.nfhs.org/media/3812357/risk-of-transmission-instrument-playing-vsfinal.pdf" target="_blank">Statement of
Work: Aerosol Generation from Playing Band
Instruments, Singing and Performing and Risk of
Infectious Disease Transmission</a></i> is still
assessed by the so-called Wells-Riley model, named after
my father, my Uncle Ed, and their teacher William Wells.
<div><br>
</div>
<div>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."</div>
<div><br>
</div>
<div>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. <u>Please
keep that Wells-Riley equation in mind when next you
sing together</u>!</div>
<div><br>
</div>
<div>Dick</div>
<div><br>
</div>
<div><br>
</div>
<div>P.S. Here's the equation, for your next moment of
light party conversation:</div>
<div><br>
</div>
<div>
<div><img src="cid:172b321edeac58644f71" alt="Screen Shot 2020-06-13 at 6.52.38 PM.png" style="width:699px;max-width:100%"><br>
</div>
</div>
<div><span><span id="m_8581714175155718508m_-7301918212486860418gmail-fd1" style="box-sizing:border-box;margin:1em 0px;padding:0px;display:block"><span style="box-sizing:border-box;margin:0px;padding:0px"><span style="box-sizing:border-box;margin:0px;padding:0px;color:rgb(136,136,136)"></span><span id="m_8581714175155718508m_-7301918212486860418gmail-MathJax-Element-1-Frame" style="box-sizing:border-box;margin:0px;padding:0px;display:inline-block;line-height:normal;font-size:16.2px;word-spacing:normal;white-space:nowrap;float:none;direction:ltr;max-width:none;max-height:none;min-width:0px;min-height:0px;border:0px"><span style="box-sizing:border-box;margin:0px;padding:1px 0px 0px;border:0px;height:1px;width:1px;overflow:hidden;display:block"><span style="font-family:Arial,Helvetica,sans-serif;font-size:small;color:rgb(34,34,34)">Dick</span></span></span></span></span></span></div>
<div><span><span id="m_8581714175155718508m_-7301918212486860418gmail-fd1" style="box-sizing:border-box;margin:1em 0px;padding:0px;display:block"><span style="box-sizing:border-box;margin:0px;padding:0px"><span style="box-sizing:border-box;margin:0px;padding:0px;color:rgb(136,136,136)"></span><span id="m_8581714175155718508m_-7301918212486860418gmail-MathJax-Element-1-Frame" style="box-sizing:border-box;margin:0px;padding:0px;display:inline-block;line-height:normal;font-size:16.2px;word-spacing:normal;white-space:nowrap;float:none;direction:ltr;max-width:none;max-height:none;min-width:0px;min-height:0px;border:0px"><span style="box-sizing:border-box;margin:0px;padding:1px 0px 0px;border:0px;height:1px;width:1px;overflow:hidden;display:block">P=1−exp(−pQτq)</span></span></span></span></span></div>
</div>
<div dir="ltr"><br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jun 12, 2020 at
8:21 PM Bronwyn Fryer via Choir <<a href="mailto:choir@unitarianchurchofmontpelier.org" target="_blank">choir@unitarianchurchofmontpelier.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
Hi all<br>
<br>
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. <br>
<br>
If interested, let me know and we can make arrangements.
<br>
<br>
Love to all. <br>
Unitarian Church of Montpelier<br>
Choir email list<br>
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</blockquote>
</div>
Unitarian Church of Montpelier<br>
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</blockquote>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>Unitarian Church of Montpelier
Choir email list
unsubscribe at <a href="http://www.unitarianchurchofmontpelier.org" target="_blank">www.unitarianchurchofmontpelier.org</a>
</pre>
</blockquote>
</div>
</div></div>