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Orla Hegarty Profile picture
@Orla_Hegarty
Dec 18, 2021 • 7 tweets • 3 min read • Read on X
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Pubs, restaurants & #Covid19: How the virus spreads inside (pre Omicron) 1/ thetimes.co.uk/article/ventil…
2/
3/
4/ (only people who have had a booster more than 2 weeks ago & less than 3 months ago are likely to have high levels of immunity to Omicron)
5/ (as Omicron is much more transmissible than Delta, it’s likely more than 17 will have caught the virus)
6/ min. ventilation of 6 air changes per hour is advised; if not available, filtration could give added ‘air cleaning’ equivalent to 3 more air changes per hour
7/ clean air standards can lower risk in all buildings.. clean air standards give all businesses a road map to permanent opening without risk of super-spread.. for protection of staff & confidence of customers. #CovidIsAirborne

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More from @Orla_Hegarty

Orla Hegarty Profile picture
Feb 19, 2024
🇮🇪 Covid Inquiry- my comments didn’t all make it into @Independent_ie today 🧵 1/

“Over 9,600 people have died from Covid-19 in Ireland, including one hundred & forty one in the weeks since Christmas…
independent.ie/irish-news/pub…
..involving 31 residents. The pandemic is not over. An estimated 10% of those infected suffer long-term effects, & this burden of illness continues to grow.

Therefore, it is likely too soon to evaluate much of Ireland’s response. Decision-making is in the same hands… 2/
However there are meaningful questions that can be asked to improve current response & future-proof Ireland against repeat of this crisis.
Firstly the scientific failure –then & now– to acknowledge how the disease spreads.

Covid-19 is airborne & no amount of hand-washing.. 3/
Read 8 tweets
Orla Hegarty Profile picture
Oct 7, 2023
“Sick of your kids being sick? Clean air in schools may be the answer”

Co-written with @j_corey02 in @irishexaminer today

🧵of links to research mentioned & more information for parents & teachers #Schools #EdChat #EdChatIE 1/
(from 2021): “growing body of research on COVID-19 provides abundant evidence for the predominance of airborne transmission. This route dominates under certain environmental conditions, particularly indoor environments that are poorly ventilated” 2/ ncbi.nlm.nih.gov/pmc/articles/P…
“These viruses can be spread by an infected person simply by breathing. And like cigarette smoke, these viruses can linger in the air for hours in poorly ventilated spaces”

(from 2021, Prof @kprather88 ) 3/
Read 17 tweets
Orla Hegarty Profile picture
Sep 21, 2023
#Schools latest research for benefits of ventilation & filtration in classrooms 1/

🇨🇭“Classrooms with higher CO2 levels (poor ventilation) experienced more than 60% higher chance of Covid-19 outbreaks”

Houssein Gorji #WHOIndoorAir (vid @mdc_martinus)
🇬🇧 HEPA air filtration in classrooms reduced children’s absences by 20%
@CathNoakes at #WHOIndoorAir 2/
@CathNoakes 🇮🇹 Ventilation can cut school Covid cases by 82% 3/ reuters.com/world/europe/i…
Read 6 tweets
Orla Hegarty Profile picture
Feb 12, 2022
[Thread] a short story about pandemic misinformation & biased reporting

On 1 April 2021 I was contacted by a newspaper journalist.. 1/ Image
..the journalist attached the reply received from HSPC (who collect Covid data)

It DID NOT say 1 in 1,000 cases

It gave very limited data about *42 outbreaks* investigated by HSE

It reads as someone being helpful guessing at what might be outdoors (construction, sport etc) 2/ Image
..vast majority of Covid cases are not connected to outbreaks..& capacity to investigate outbreaks is also very limited

The journalist took a guess at *42 outbreaks* (262 cases) ..& erroneously related it to total number of cases at that time (236,600 cases, 1 April 2021) 3/ Image
Read 24 tweets
Orla Hegarty Profile picture
Feb 10, 2022
New 3-bedroom houses*:

Maynooth €463,000

Edenderry €239,000 (35km away)

Portlaoise €245,000 (70km)

Kildare €275,000 (35km)

Tullamore €279,000 (70km)

Ballitore €280,000 (50km)

Athy €295,000 (55km)

Navan €310,000 (40km)

*same regulations, standards, tax etc
related:
related:
Read 5 tweets
Orla Hegarty Profile picture
Jan 10, 2022
#Covid19 Schools, what to do?

No two schools are same & conditions vary from room to room & from hour time hour
Statistically there’s an infectious child in EVERY class now, so a classroom has same risk as an isolation ward in a hospital. This is a very high risk to manage 1/
🚦 CO2 (carbon dioxide) monitors are in schools to measure exhaled air. (They don’t measure virus)

..the more people breathing, the more CO2 build up

.. the more exhaled air, the more chance of inhaling virus particles

So more clean air & fewer people reduces the risks 2/
🚦@Education_Ire guidance suggests >1500ppm is ‘poor ventilation’ but in a pandemic this is too high (3% of every breath is not clean air)

Recommended is <800ppm (<1% of every breath is not clean air)

Outdoor air is ≈420ppm (very low risk unless close)
gov.ie/en/publication… Image
Read 10 tweets

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