I feel that we need science *and* community input to make good decisions as
organizers. I don't think either is sufficient alone. Plagiarizing a
comment from myself in a previous conversation about covid precautions that
took place on Facebook:

I think people who have been following the science and even agree on the
science might make different decisions about what precautions are valuable
based on factors that science hasn't yet or may never provide clarity on.
Some of them are scientific questions and some of them are not. And some of
them are questions that can *only* be answered by our community! Questions
like:

   - What is the exact nature and prevalence of long covid?
   - How do the risks of covid compare to risks we took in a prepandemic
   world?
   - How does our community value risk for pleasure?
   - Will things get less risky in the future?
   - How long is our community willing to wear masks while dancing? A year?
   Two years? Forever?
   - Does our community care if we exclude people who can't or won't get
   vaccinated?
   - Etc.

I think people can agree on the (mostly) settled science—how covid is
transmitted, how well masks and vaccines work, what the possible outcomes
of a covid infection are, who is most at risk—and still have very different
answers to these questions, many of which are pretty reasonable. We need
science *and* community input *and* organizer judgment to guide decisions.

Harris

On Tue, Jan 10, 2023 at 1:28 PM Dana Dwinell-Yardley via Organizers <
[email protected]> wrote:

> And here's a brief synopsis of the data and study Mac referenced, as
> written by Katelyn Jetelina (author of the newsletter Your Local
> Epidemiologist):
>
> ---
> Mask mandates in schools work
> What we know: Masks work on an individual level, but the effectiveness of
> population-level mandates is less understood.
>
> New info: A study from the New England Journal of Medicine compared
> schools in Massachusetts that kept the mask mandate to schools that removed
> the mask mandate after the statewide policy was rescinded. Schools that
> lifted masking had an additional 44.9 COVID-19 cases per 1000 students and
> staff. (Study can be viewed in full at
> https://www.nejm.org/doi/full/10.1056/NEJMoa2211029)
>
> Why does this matter? Mask mandates in large settings, like schools, work.
> This is important to know now or in future pandemics to keep kids in school.
> --
>
> On Tue, Jan 10, 2023, 12:40 PM Walker Sloan via Organizers <
> [email protected]> wrote:
>
>>
>> Hey, all you organizers
>>
>> HARD DATA:
>>
>> On the issue of masks required OR optional, here is some actually
>> useful, vaguely understandable data, published by NEJM, New England
>> Journal of Medicine.  NEJM (Nee-gem) is one of the world premiere
>> medical journals.
>>
>> Since I'm interpreting this, my creds are an SB, MIT in physics, and an
>> engineer in medical devices.  I do numbers.  And I'm on the committee
>> for the Thursday Night Dance at Scout House in Concord MA.
>>
>> Attached is a summary sheet for a NEJM article on lifting the mask
>> mandate in Boston public schools.  My hypothesis -- opinion -- is that a
>> contra dance is comparable to packing a bunch of kids into a school.
>> You'll want to view the PDF to see what I'm talking about.
>>
>> The UPPER RIGHT GRAPH, the important lines are the lower three lines --
>> two red and one blue.  The red lines are the case rates 2 and 3 weeks
>> AFTER lifting the mask mandate.  The blue line is the case rate for
>> schools NOT lifting the mask mandate.  By engineering standards, the two
>> red lines peak about 50% higher than the blue line.
>>
>> In the RESULTS paragraph on the left, last sentence: "One third of the
>> Covid-19 cases that occurred..."  This is another way of expressing a
>> 50% increase.
>>
>> Do masks PREVENT Covid?  We all know they don't.  Neither do vaxes and
>> boosters.  What they do is stack the ODDS in favor of individuals and
>> COMMUNITIES not getting Covid.
>>
>> I strongly believe that stacking the odds is the responsible way to go.
>> I do NOT believe in basing policies on surveys of dancer preferences.
>>
>> Mac Sloan
>>
>> On 23/01/07 5:56 PM, Laura Alexander wrote:
>> > Hi Mac,
>> >
>> > My understanding of transmission risk is based on information from
>> > mainstream epidemiologists, not surveys. As a scientist not working in
>> > epidemiology, I'm curious for expert information and seek it out.
>> > Believe it or not, I still think our position is appropriate and
>> > responsible. I'm aware of these studies and the information you shared,
>> > but thank you for mentioning them. I'm happy to continue this
>> > conversation offline, but I'd hope you refrain from making assumptions
>> > in the future about what people understand.
>> >
>> > Laura
>> >
>> >
>> >
>> > On Sat, Jan 7, 2023 at 3:27 PM Walker Sloan <[email protected]
>> > <mailto:[email protected]>> wrote:
>> >
>> >
>> >     "Our understanding on transmission risks..."  Surveys reflect
>> >     preferences, not science.
>> >
>> >     Science:  In Nov '22, per the CDC, bivalent boosted people had 1/3rd
>> >     the
>> >     chance of testing positive.  This means that requiring bivalent
>> >     boosters
>> >     will dramatically cut the number of positives dancing in your hall.
>> >
>> >     See attachment.  Light green box at the bottom.
>> >
>> >     With XBB.1.5 this number has yet to be determine.  But odds are
>> there
>> >     will be a good effect.
>> >
>> >     Do vaxes prevent Covid?  No, but the odds of Covid producing a bad
>> >     outcome in vaxed and boosted people go WAY down: Testing positive,
>> >     transmitting, hospitalization, death -- WAY down.
>> >
>> >     Holding dances for unvaxed people not only endangers them, but ALSO
>> the
>> >     folks they go home to and go to work with.
>> >
>> >     Holding unvaxed or vax-optional dances prolongs the pandemic.
>> >     Regardless of surveys or understandings.
>> >
>> >     Mac Sloan
>> >
>> >     On 23/01/07 2:07 PM, Laura Alexander wrote:
>> >      > Arden contra (in Delaware) has a policy that's very similar to
>> >      > Montelier's, and for the same reasons. We surveyed this fall and
>> >     dropped
>> >      > our vaccine requirement, and we'll survey our community again
>> this
>> >      > month. Without a significant change to our understanding on
>> >     transmission
>> >      > risk difference between vaccinated and unvaccinated people, we
>> won't
>> >      > consider re-excluding unvaccinated people. If it's not safe
>> >     enough to
>> >      > dance for community conditions and hospitals, we'll postpone
>> dances.
>> >      >
>> >      > Whole policy:
>> >      >
>> >      > - vaccines strongly encouraged
>> >      > - masks required
>> >      > - hall with excellent ventilation
>> >      > - contact tracing with mandatory info collection, system run by a
>> >      > responsible person outside the community, announced at the dance
>> >     and in
>> >      > a follow-up email
>> >      > - announcement that if anyone feels sick after the dance, we
>> >     expect them
>> >      > to get tested ASAP
>> >      > - rapid tests available to those without access
>> >      >
>> >      > Thankfully we haven't had any known transmission yet since
>> >     restarting in
>> >      > March 2022. We average around 40 attendees per dance.
>> >      >
>> >      > I agree with Julian, I hope every local area has a space that's
>> >      > taking all precautions available, and it also makes sense to me
>> >     to have
>> >      > mask-optional dances if there is no foreseeable change to covid
>> risk.
>> >      >
>> >      > Thanks for the thread, everyone - it's useful to see what other
>> >     dances
>> >      > are doing.
>> >      > Laura Alexander
>> >      >
>> >      > On Sat, Jan 7, 2023 at 12:13 AM Walker Sloan via Organizers
>> >      > <[email protected]
>> >     <mailto:[email protected]>
>> >      > <mailto:[email protected]
>> >     <mailto:[email protected]>>> wrote:
>> >      >
>> >      >     Another pebble in the pond --
>> >      >
>> >      >     *  Current booster verified
>> >      >     *  N95, KN95, KF94 required
>> >      >     *  Request cases to be reported back to the organizers
>> >      >     *  Emails collected to report cases anonymously to the
>> community
>> >      >     *  Max venue ventilation -- cold drafts this time of year in
>> >     the North
>> >      >
>> >      >     NONE of these is sufficient to prevent Covid.  ALL of them
>> >     help reduce
>> >      >     transmission.
>> >      >
>> >      >     None of us organizers volunteered to be public health
>> >     officials.  And
>> >      >     certainly not protocol cops.  But it makes sense for us to
>> >     STACK THE
>> >      >     ODDS as high as possible in favor of COMMUNITY health.
>> >      >
>> >      >     Maximizing community safety takes precedence over individual
>> >     preference.
>> >      >
>> >      >     That's the most responsible way to organize a dance.  Not
>> >     just for the
>> >      >     benefit of our dancers, but also for the greater community in
>> >     which all
>> >      >     of our dancers live.
>> >      >
>> >      >     Mac Sloan
>> >      >     Thursday Night Dance, Concord Scout House, MA
>> >      >
>> >      >
>> >      >
>> >      >
>> >      >
>> >      >     Walker Sloan
>> >      > [email protected] <mailto:[email protected]>
>> >     <mailto:[email protected] <mailto:[email protected]>>
>> >      >
>> >      >     On 23/01/06 11:18 PM, Julian Blechner via Organizers wrote:
>> >      >      > Question for anyone with the "you will alienate someone"
>> or
>> >      >     "everyone
>> >      >      > has a different level of risk" mindset:
>> >      >      > In other areas of life, do you consider someone's personal
>> >      >     preference
>> >      >      > (like not wearing a mask) the same as someone's health
>> >     needs (like
>> >      >      > having a health condition, or a family member who does)?
>> >      >      >
>> >      >      > Like, how is this "both sides have a preference"
>> narrative any
>> >      >     different
>> >      >      > from able-bodied people being like "Oh, well, I just don't
>> >     like
>> >      >      > handicapped ramps, I prefer steps"?
>> >      >      > I'm not asking to be mean or rude. I genuinely would love
>> an
>> >      >     explanation.
>> >      >      >
>> >      >      > I think there actually _is_ a way to please most people,
>> >     and not
>> >      >     just
>> >      >      > disregard people with medical conditions (or family with
>> >     them).
>> >      >      > That is - making sure no area's dances are all
>> mask-optional.
>> >      >      > There's a big difference between an area having _some_
>> >     mask-optional
>> >      >      > dances, sure, but if they're _all_ mask-optional.
>> >      >      >
>> >      >      > Thanks,
>> >      >      > Julian Blechner
>> >      >      >
>> >      >      > On Fri, Jan 6, 2023 at 5:56 PM John and/or Jan Bloom via
>> >     Organizers
>> >      >      > <[email protected]
>> >     <mailto:[email protected]>
>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>
>> >      >      > <mailto:[email protected]
>> >     <mailto:[email protected]>
>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>>> wrote:
>> >      >      >
>> >      >      >     As Alan said,  whatever you do you will alienate
>> someone.
>> >      >      >
>> >      >      >     What I did with the Brunswick ECD was to ask all of
>> >     the dancers
>> >      >      >        - would you dance if masks were required
>> >      >      >        - would you dance if masks were optional
>> >      >      >     and so on.
>> >      >      >
>> >      >      >     Then I picked the rules that maximized the number of
>> >     dancers.
>> >      >      >
>> >      >      >     I realize that this is harder for Contra, where you
>> >     have a lot of
>> >      >      >     dancers that you can't ask, including potential future
>> >     dancers.
>> >      >      >     But in my case it seemed like the right way to do it.
>> >      >      >
>> >      >      >     John Bloom
>> >      >      >     _______________________________________________
>> >      >      >     Organizers mailing list --
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>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>
>> >      >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>
>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>>
>> >      >      >     To unsubscribe send an email to
>> >      >      > [email protected]
>> >     <mailto:[email protected]>
>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>
>> >      >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>
>> >      >     <mailto:[email protected]
>> >     <mailto:[email protected]>>>
>> >      >      >
>> >      >      >
>> >      >      > _______________________________________________
>> >      >      > Organizers mailing list --
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>> >     <mailto:[email protected]>>
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