NOUS AÉRONS / LET'S AIR

Formidable article sur le risque de transmission aéroportée dans une classe, un bureau ou un hopital. Quelques conclusions :
- les masques FFP2 permettent de diviser par 13 la dose virale.
- une exposition de 8h dans un bureau mal ventilé est equivalent, en termes de risque, à un face à face de 15 mn.
Un article en libre accès qui propose des modèles et des ordres de grandeurs pour des cas concrets. On vous le recommande vivement.
https://royalsocietypublishing.org/doi/10.1098/rsif.2024.0740

New version of our infographic on pathogens that transmit through the air. We welcome your comments and suggestions.
Thanks to all contributors who have already done so.

"Better classroom air quality is critical if bird flu spreads. Schools must to be made as “pandemic proof” as possible."
https://planetdetroit.org/2025/03/indoor-air-quality-bird-flu/

Thanks to numerous contributions and a small multidisciplinary international working group, our introduction to airborne diseases has progressed well, from our point of view. You can find it at: https://letsair.org/#mediation

Thanks to a large number of contributions over the last few weeks, our scientific mediation project on airborne diseases is moving forward, and a first 7-page draft is available at https://letsair.org/#mediation .
A more comprehensive and ambitious guide should follow.

"Rhode Island should lead by example and prioritize clean air in our schools. We need a law that pushes schools to engage in basic indoor air quality investments, which would benefit students, teachers, and the community".
by two former White House advisors.
https://www.bostonglobe.com/2025/03/13/metro/commentary-ri-clean-air-schools/

Discussions about our infographic are continuing with aerosol scentists, microbiologists, epidemiologists... A small international working group has been set up for this purpose. Below is the latest version. The work is far from finished, and some points are still being debated.

Notre infographie sur les maladies qui se transmettent par l'air est désormais disponible en français sur https://nousaerons.fr/#mediation

An English version is still available at https://letsair.org/#mediation

Our infographic on pathogens that transmit through the air is now available in a PDF format file at https://letsair.org/#mediation

Research conducted in Los Angeles schools in 2022-23: in classrooms with HEPA air cleaners, average school-year PM2.5 was 39.9% lower and infiltration of outdoor PM2.5 into classrooms was 13.8–82.4% lower than non-HEPA classrooms, depending on the school.
https://www.nature.com/articles/s41370-025-00743-9

Here's the latest revision of our infographic on the different transmission routes of certain diseases. We welcome your feedback, especially from native English speakers on the wording used.

WIAC2025 - 6th Workplace and Indoor Aerosols Conference.

May 6, 2025 → May 8, 2025, Angevin Aragonese Castle (Gaeta, Italy).

The place to be to hear from many experts in the field.

https://wiac2025.eu

"Based on Australian data, it is likely between 10 and 15 percent of Covid deaths are from hospital-acquired infections. Improved baseline standards for hospital ventilation had to be a top priority for mitigating Covid and other respiratory illnesses."
https://www.rnz.co.nz/news/what-you-need-to-know/545120/too-many-catching-covid-19-in-hospital-experts-say-but-precautions-being-rolled-back