This is an excert from a lecture I gave (and re-recorded) last summer. In this lecture, I discussed the approach
we use in the University of Bristol to study airborne pathogens. You can find the whole lecture here:
youtu.be/iZxnbxgG5zI
we use in the University of Bristol to study airborne pathogens. You can find the whole lecture here:
youtu.be/iZxnbxgG5zI
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025)
YouTube video by Al Haddrell
youtu.be
January 29, 2026 at 11:35 PM
This is an excert from a lecture I gave (and re-recorded) last summer. In this lecture, I discussed the approach
we use in the University of Bristol to study airborne pathogens. You can find the whole lecture here:
youtu.be/iZxnbxgG5zI
we use in the University of Bristol to study airborne pathogens. You can find the whole lecture here:
youtu.be/iZxnbxgG5zI
In may I had the chance to present the project at the Workplace and Indoor Aerosols Conference (WIAC2025) in Italy and was, being a total outsider, warmly welcomed by the scientific community there. I’ve written a longer thread about it here: bsky.app/profile/aure...
Last week I have been at the 6th Workplace and Indoor Aerosols Conference #WIAC2025 in Gaeta, Italy and given an presentation about the open source indoor air quality data collection project I created: IndoorCO2Map.com
December 31, 2025 at 10:15 AM
In may I had the chance to present the project at the Workplace and Indoor Aerosols Conference (WIAC2025) in Italy and was, being a total outsider, warmly welcomed by the scientific community there. I’ve written a longer thread about it here: bsky.app/profile/aure...
And a link to Al's presentation at that same conf (on YouTube):
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025) 36 mins
www.youtube.com/watch?v=iZxn...
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025) 36 mins
www.youtube.com/watch?v=iZxn...
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025)
YouTube video by Al Haddrell
www.youtube.com
November 18, 2025 at 8:23 PM
And a link to Al's presentation at that same conf (on YouTube):
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025) 36 mins
www.youtube.com/watch?v=iZxn...
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025) 36 mins
www.youtube.com/watch?v=iZxn...
Wow, this is just awesome on so many levels! Thank you so much to you, everyone at the University of Bristol, and anyone else involved for your work!
I really appreciate this part in particular where you mention the 10x difference at 40 minutes between 3000ppm and 500ppm: youtu.be/iZxnbxgG5zI?...
I really appreciate this part in particular where you mention the 10x difference at 40 minutes between 3000ppm and 500ppm: youtu.be/iZxnbxgG5zI?...
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025)
YouTube video by Al Haddrell
youtu.be
July 27, 2025 at 11:56 PM
Wow, this is just awesome on so many levels! Thank you so much to you, everyone at the University of Bristol, and anyone else involved for your work!
I really appreciate this part in particular where you mention the 10x difference at 40 minutes between 3000ppm and 500ppm: youtu.be/iZxnbxgG5zI?...
I really appreciate this part in particular where you mention the 10x difference at 40 minutes between 3000ppm and 500ppm: youtu.be/iZxnbxgG5zI?...
Here’s a link to the first one.
In this presentation I discuss some of the work we’ve doing @BrisUni over the past 5 years studying the airborne transmission of disease.
youtu.be/iZxnbxgG5zI
In this presentation I discuss some of the work we’ve doing @BrisUni over the past 5 years studying the airborne transmission of disease.
youtu.be/iZxnbxgG5zI
Designing the Air: Maximizing Viral Decay to Limit Disease Transmission (WIAC2025)
YouTube video by Al Haddrell
youtu.be
July 7, 2025 at 8:33 PM
Here’s a link to the first one.
In this presentation I discuss some of the work we’ve doing @BrisUni over the past 5 years studying the airborne transmission of disease.
youtu.be/iZxnbxgG5zI
In this presentation I discuss some of the work we’ve doing @BrisUni over the past 5 years studying the airborne transmission of disease.
youtu.be/iZxnbxgG5zI
Morgen wird uns @aurel.indoorco2map.com über die WIAC2025 erzählen.
Wir freuen uns über einen Austausch!
Interessiert und (noch) kein IGÖ-Mitglied?
Entweder Mitglied werden oder als Gast teilnehmen. Dazu entweder PN oder Mail an info@igoe.at
Wir freuen uns über einen Austausch!
Interessiert und (noch) kein IGÖ-Mitglied?
Entweder Mitglied werden oder als Gast teilnehmen. Dazu entweder PN oder Mail an info@igoe.at
June 10, 2025 at 2:03 PM
Morgen wird uns @aurel.indoorco2map.com über die WIAC2025 erzählen.
Wir freuen uns über einen Austausch!
Interessiert und (noch) kein IGÖ-Mitglied?
Entweder Mitglied werden oder als Gast teilnehmen. Dazu entweder PN oder Mail an info@igoe.at
Wir freuen uns über einen Austausch!
Interessiert und (noch) kein IGÖ-Mitglied?
Entweder Mitglied werden oder als Gast teilnehmen. Dazu entweder PN oder Mail an info@igoe.at
Didn’t bring my monitor 😬 I left it in the lab. This wasn’t as fancy as the WIAC2025 last month where everything was measured. I’ll let them know for next time.
June 6, 2025 at 8:51 PM
Didn’t bring my monitor 😬 I left it in the lab. This wasn’t as fancy as the WIAC2025 last month where everything was measured. I’ll let them know for next time.
A la conférence des expert'es de la qualité de l'air intérieur (6th Workplace and Indoor Aerosols Conference #WIAC2025, Gaeta, Italy), il y a des capteurs pour le CO2 et les pM2.5 dans les salles de conf et des écrans pour que tout le monde soit au courant de la qualité de l'air qu'iels respirent.
Measuring IRPs directly requires complicated and expensive experimental setups, but by measuring the CO2-levels in an enclosed space you can calculate the amount of exhaled air in it* , which correlates with the amount of IRPs lingering in the air.
May 20, 2025 at 10:10 AM
A la conférence des expert'es de la qualité de l'air intérieur (6th Workplace and Indoor Aerosols Conference #WIAC2025, Gaeta, Italy), il y a des capteurs pour le CO2 et les pM2.5 dans les salles de conf et des écrans pour que tout le monde soit au courant de la qualité de l'air qu'iels respirent.
One thing that came up repeatedly at #WIAC2025 was the damage caused by all the cuts to NIH, etc. Many great scientists have lost their job, doing irreparable harm to science. And the people responsible for this damage lie about their actions.
Gross and pathetic.
www.huffpost.com/entry/rfk-fi...
Gross and pathetic.
www.huffpost.com/entry/rfk-fi...
RFK Jr. Insists He Hasn't Fired 'Any Working Scientists' ― After Firing Hundreds Of Them
The HHS secretary "clearly believes that the more he tells a lie, the more it becomes the truth,” Sen. Angela Alsobrooks (D-Md.) told HuffPost.
www.huffpost.com
May 16, 2025 at 6:29 AM
One thing that came up repeatedly at #WIAC2025 was the damage caused by all the cuts to NIH, etc. Many great scientists have lost their job, doing irreparable harm to science. And the people responsible for this damage lie about their actions.
Gross and pathetic.
www.huffpost.com/entry/rfk-fi...
Gross and pathetic.
www.huffpost.com/entry/rfk-fi...
-Awareness, Information and Desinformation
-Simplicity vs Optimality
-the other presentations held at WIAC2025
-And of course the indoorCO2Map Project itself
Finally, I want to thank the organisers as well as all participants at the conference for being so welcoming to a total outsider!
-Simplicity vs Optimality
-the other presentations held at WIAC2025
-And of course the indoorCO2Map Project itself
Finally, I want to thank the organisers as well as all participants at the conference for being so welcoming to a total outsider!
May 15, 2025 at 6:53 AM
-Awareness, Information and Desinformation
-Simplicity vs Optimality
-the other presentations held at WIAC2025
-And of course the indoorCO2Map Project itself
Finally, I want to thank the organisers as well as all participants at the conference for being so welcoming to a total outsider!
-Simplicity vs Optimality
-the other presentations held at WIAC2025
-And of course the indoorCO2Map Project itself
Finally, I want to thank the organisers as well as all participants at the conference for being so welcoming to a total outsider!
Last week I have been at the 6th Workplace and Indoor Aerosols Conference #WIAC2025 in Gaeta, Italy and given an presentation about the open source indoor air quality data collection project I created: IndoorCO2Map.com
May 15, 2025 at 6:53 AM
Last week I have been at the 6th Workplace and Indoor Aerosols Conference #WIAC2025 in Gaeta, Italy and given an presentation about the open source indoor air quality data collection project I created: IndoorCO2Map.com
Live-streamed air quality readings are possible everywhere
@johnwenger9 should recommendations for air quality monitoring be incorporated into HSA code of practice for Indoor air quality
@MichealMartinTD it could start in Dáil Éireann
x.com/ukhadds/stat...
@johnwenger9 should recommendations for air quality monitoring be incorporated into HSA code of practice for Indoor air quality
@MichealMartinTD it could start in Dáil Éireann
x.com/ukhadds/stat...
Al Haddrell on X: "#WIAC2025 Indoor air quality experts don’t mess around when they meet up for a conference. Windows open (cross wind), air purifiers, and lights that inactivate microbes, coupled with real time reporting of the air. 🤘 https://t.co/gECtlf6pOZ" / X
#WIAC2025 Indoor air quality experts don’t mess around when they meet up for a conference. Windows open (cross wind), air purifiers, and lights that inactivate microbes, coupled with real time reporting of the air. 🤘 https://t.co/gECtlf6pOZ
x.com
May 11, 2025 at 7:55 AM
Live-streamed air quality readings are possible everywhere
@johnwenger9 should recommendations for air quality monitoring be incorporated into HSA code of practice for Indoor air quality
@MichealMartinTD it could start in Dáil Éireann
x.com/ukhadds/stat...
@johnwenger9 should recommendations for air quality monitoring be incorporated into HSA code of practice for Indoor air quality
@MichealMartinTD it could start in Dáil Éireann
x.com/ukhadds/stat...
There is a need for integration of the fields of medicine public health engineering and environmental science to aid human health.
A multidisciplinary and holistic approach to indoor air science is practiced as well as promoted at #WIAC2025
www.wiac2025.eu
A multidisciplinary and holistic approach to indoor air science is practiced as well as promoted at #WIAC2025
www.wiac2025.eu
WIAC2025 - Workplace and Indoor Aerosols Conference
Join leading researchers at WIAC2025 to discuss air quality, aerosols, and workplace safety.
www.wiac2025.eu
May 11, 2025 at 7:55 AM
There is a need for integration of the fields of medicine public health engineering and environmental science to aid human health.
A multidisciplinary and holistic approach to indoor air science is practiced as well as promoted at #WIAC2025
www.wiac2025.eu
A multidisciplinary and holistic approach to indoor air science is practiced as well as promoted at #WIAC2025
www.wiac2025.eu
My presentation at WIAC2025 in Gaeta was focused on DIY air cleaners. I started with two quotes about simplicity. I was recently made aware of one by an early career researcher. It is from Carver Andres Mead, a professor at CalTech and a pioneer of modern microelectronics. More ,,,
May 9, 2025 at 3:30 PM
My presentation at WIAC2025 in Gaeta was focused on DIY air cleaners. I started with two quotes about simplicity. I was recently made aware of one by an early career researcher. It is from Carver Andres Mead, a professor at CalTech and a pioneer of modern microelectronics. More ,,,
last day of WIAC2025
Scientific committee
Lidia Morawska, Queensland University of Technology, Australia
Paula Olsiewski, Johns Hopkins Bloomberg School of Public Health, US
David @dfisman.bsky.social , University of Toronto, Canada
wiac2025.eu/about.html
Scientific committee
Lidia Morawska, Queensland University of Technology, Australia
Paula Olsiewski, Johns Hopkins Bloomberg School of Public Health, US
David @dfisman.bsky.social , University of Toronto, Canada
wiac2025.eu/about.html
WIAC2025 - Workplace and Indoor Aerosols Conference
Discover WIAC2025, the premier conference on workplace and indoor aerosols, bringing experts together to discuss air quality, in Gaeta, Italy, May 6-8, 2025
wiac2025.eu
May 9, 2025 at 1:28 PM
last day of WIAC2025
Scientific committee
Lidia Morawska, Queensland University of Technology, Australia
Paula Olsiewski, Johns Hopkins Bloomberg School of Public Health, US
David @dfisman.bsky.social , University of Toronto, Canada
wiac2025.eu/about.html
Scientific committee
Lidia Morawska, Queensland University of Technology, Australia
Paula Olsiewski, Johns Hopkins Bloomberg School of Public Health, US
David @dfisman.bsky.social , University of Toronto, Canada
wiac2025.eu/about.html
On my way to the final day of the Workplace and Indoor Aerosols Conference #WIAC2025 at Castello Angioino. Will write a longer text about it when I am back home in a few days, however I can already say that the scientists here are very welcoming group of people.
May 8, 2025 at 5:55 AM
On my way to the final day of the Workplace and Indoor Aerosols Conference #WIAC2025 at Castello Angioino. Will write a longer text about it when I am back home in a few days, however I can already say that the scientists here are very welcoming group of people.
Will #WIAC2025 talk about architecture, buildings, social consequences of architectural misconceptions trough indoor air threat? Maybe in “Mitigation Measures and Strategies”? Fingers crossed somehow airborne scientists and architects will talk together.
Deadly buildings (EN) | To have invented an architecture severed from the exterior, has in the same time invented the conditions for contagious indoor air, the vector of respiratory infections: an unthought-of, invisible, humanly devastating threat, a critical blind spot in the Covid-19 pandemic.
Deadly buildings
Architecture and indoor air, a blind spot of the Covid-19 pandemic. Health risks in places of social interaction.
whynotnemo.substack.com
May 7, 2025 at 5:17 PM
Will #WIAC2025 talk about architecture, buildings, social consequences of architectural misconceptions trough indoor air threat? Maybe in “Mitigation Measures and Strategies”? Fingers crossed somehow airborne scientists and architects will talk together.
Liebe Eva, vielen Dank für Deinen unermüdlichen Einsatz und Dein Engagement. Die Luftwerte im LK Scheibbs sind ja fantastisch, quasi Frischluft. Vglbar mit den Luftwerten auf der #WIAC2025. Weißt Du, ob da seit 2020 nachgebessert wurde oder ist das ein Neubau?
May 7, 2025 at 1:23 PM
Liebe Eva, vielen Dank für Deinen unermüdlichen Einsatz und Dein Engagement. Die Luftwerte im LK Scheibbs sind ja fantastisch, quasi Frischluft. Vglbar mit den Luftwerten auf der #WIAC2025. Weißt Du, ob da seit 2020 nachgebessert wurde oder ist das ein Neubau?
Some scientists know their field of expertise. Thanks for sharing. And thanks to Giorgio Buonanno for this powerful demonstration of whats possible.
#IAQ #CleanAir #WIAC2025
#IAQ #CleanAir #WIAC2025
Another author on that paper (the amazing Giorgio Buonanno) showed the beautiful dose-response relationship between ventilation and covid prevention in kids. Giorgio is the organizer of the Gaeta meeting.
pmc.ncbi.nlm.nih.gov/articles/PMC...
pmc.ncbi.nlm.nih.gov/articles/PMC...
Increasing ventilation reduces SARS-CoV-2 airborne transmission in schools: A retrospective cohort study in Italy's Marche region
While increasing the ventilation rate is an important measure to remove inhalable virus-laden respiratory particles and lower the risk of infection, direct validation in schools with population-based ...
pmc.ncbi.nlm.nih.gov
May 7, 2025 at 12:01 PM
Let me know if this is reaching folks at #WIAC2025! Hopeful progress to report from a small Canadian province.
Hi! Do folks at #WIAC2025 know about our progress in New Brunswick, Canada? In @susanholtnb.bsky.social ‘s mandate letters to 9 of 18 cabinet ministers, she directs them to lead or support a new Clean Air Act including ASHRAE 241 for new public buildings. www.gnb.ca/en/gov/conta... ⭐️
Mandate letters - gnb.ca
www.gnb.ca
May 7, 2025 at 12:00 PM
Let me know if this is reaching folks at #WIAC2025! Hopeful progress to report from a small Canadian province.
If they can do this in a 13th century castle, they can do clean air in healthcare, education and work places!
Work and indoor air conference #WIAC2025
Work and indoor air conference #WIAC2025
May 7, 2025 at 11:44 AM
If they can do this in a 13th century castle, they can do clean air in healthcare, education and work places!
Work and indoor air conference #WIAC2025
Work and indoor air conference #WIAC2025
May 7, 2025 at 9:38 AM