[Thread] Chicago didn’t have a second wave of Spanish Flu.. so what did they do, & how did the city re-open when there was no vaccine? #Ventilation #COVID19 1/
..here are the public health measures that Chicago took on the autumn of 2018
‘open window ventilation in all school rooms.. pupils warmly dressed.. daily check on pupils & absentees in schools.. use of masks.. landlords required to heat homes.. ’ 2/ documentcloud.adobe.com/link/track?uri
..’isolation & quarantine.. home nursing provided (see my thread on home nursing).. churches required to improve ventilation.. 150 city health officers on full time service’ 3/
..’closure of dance halls, theatres, restaurants in order to keep schools open .. ventilation of public transport.. public health doctors & nurses’ 4/
& then by late October/early November (just 6 weeks into the outbreak) theatres were allowed to reopen, social functions & public meetings resumed 5/
So what was happening to make this re-opening possible?
The Chicago Bureau of Sanitation (1911-18 report) 6/
..who understood airborne disease & spread in buildings

‘the most important factor in prevention is the air that we breath’

‘buildings merit earnest study & attention in a program of real & effective work in preventing the spread of disease’ 7/
the had boots on the ground, ‘one man for every 100,000 of population’ & a regime of regulating, inspecting, investigating & enforcing ventilation standards in buildings for public health 8/
..they had very detailed ventilation standards & buildings were inspected.. including measuring air temperature, humidity, velocity, dust particles &.. CO2 (carbon dioxide) monitoring was used to catch inadequate ventilation 9/
& Chicago had a head start on other cities, having been the first to regulate in 1911, & then having targeted improvements every year in picture-houses, street-cars, restaurants, garages etc

.. then in September 1918 the Spanish Flu epidemic arrived /10
Chicago had 1,700 street-cars, so ventilation on public transport received a lot of attention.. there were concerns about the cost of improving poor ventilation /11
but The Chicago Bureau of Sanitation prevailed.. 12/
so the Spanish Flu epidemic in Chicago pandemic was fought on the ground with building inspectors.. who measured, targeted & eliminated actual public health risks in actual buildings
‘while the work involved was enormous, the results obtained outweighed the difficulties’ /13
In parallel, Chicago rolled out home nursing to care for patients ~&~ to prevent disease spread in the community & within homes, using #ventilation to prevent disease spread /14
‘Nothing was done to interfere with the morale of the community’ /15
[source: Report and Handbook of the Department of Health of the City of Chicago for Years 1911 to 1918 inclusive, Influenza Encyclopaedia]
*typo 1918, not 2018

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More from @Orla_Hegarty

21 Feb
Sunday Times Editorial: ‘Without the private sector, we build castles in the air’

.. here’s an example of how housing policy is misled by misunderstanding, half-truths & property sector spin 1/ @thetimesIE @JohnBurnsST
left v right politics
.. this is a false argument, the issues here are achieving best value for money, avoiding risk of failure, & ensuring transparency 2/
below market prices
...the ‘discount’ on market prices proposed is a public subsidy of €50-100,000 per home.. or a second mortgage for the buyer
This is opposed by the Central Bank, ESRI, NESC, Dept Finance & most other analysts as likely to further inflate house prices 3/
Read 13 tweets
20 Feb
[Thread] how ~not~ to do pandemic precautions for airborne virus #COVID19
hospital in Netherlands (pics @ContainmentNu ) 1/ ImageImage
2/ Pub, England (pic @rhodri ) *zoom in Image
3/ School, USA (vid @KatBrezler)
Read 10 tweets
19 Feb
‘Central Bank is concerned the Government’s new Affordable Housing Scheme may increase property prices and saddle mortgage holders with unaffordable debts’
ESRI claims shared equity schemes risk driving up prices
Permanent affordability must be engineered into State’s housing system, NESC says
Read 5 tweets
7 Feb
#Covid19 If you’re new to understanding #airborne virus transmission, here’s some background
@zeynep theatlantic.com/health/archive…
..& a really clear demonstration of #aerosols from @jljcolorado on @weatherchannel #CovidIsAirborne
.. & a 5 minute deep dive into the science of #airborne virus from @linseymarr

Airborne Transmission of COVID-19: How it works and how to protect ourselves - YouTube
Read 9 tweets
6 Feb
[Thread] #Covid19 #Quarantine hotel breaches & cross infection of guests & staff due to weak points in:
-choice of buildings
-staffing & security
-inadequate precautions for airborne spread 1/
#ventilation to be re-examined by experts given possibility of #aerosol transmission in this case & in earlier case, where a family in hotel #quarantine & a person staying across corridor had contracted the same variant of the virus’ #Covid19 2/ abc.net.au/news/2021-02-0…
#ventilation expert unsurprised by #COVID19 infections linked to quarantine

“quick wins by limiting recirculation, increasing air flows & filters.. increasing air dilutes the risk of airborne infectious diseases being carried from room to room” 3/ stuff.co.nz/business/12407…
Read 11 tweets

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