Minor update to our infographic on diseases transmitted through the air we breathe. Hope that helps.

The latest version of our infographic on airborne diseases is now available as a PDF at letsair.org/mediation

New version of our infographic on diseases transmitted through the air we breathe. Following several comments , we've repositioned vaccines between pathogens and diseases for greater clarity.

Update of our infographic
Sources :
USA www.cdc.gov/vaccines/imz...
France : www.ameli.fr/assure/sante...

New version of our infographic on Diseases from pathogens than can be transmitted through the air we breath.

We took into account proposals: change of colours, addition of Neisseria meningitidis and indication of vaccines recommended for children in the USA by the Centers for diseases control.

You're right, we'll change that. Thanks.

Shipment coming soon.

This is Jaspair, our CO2 monitor for schools. More information at https//letsair.org/jaspair

A first user guide for Jaspair, our CO2 monitor designed for schools, is now available at : letsair.org/jaspair/

French people : nous recherchons des enseignants d'écoles maternelles ou primaires situées en Essonne pour tester Jaspair dans leurs classes. Merci de nous contacter sur jaspair@letsair.org

Small-scale production of Jaspair, our CO2 monitor designed for schools, is underway. We will soon be contacting the schools where the initial tests will take place.

During a lab at the @centralesupelec.bsky.social engineering school, Jaspair - our CO2 monitor - checks that the indoor air renewal remains good. The belly is green, the CO2 level is < 600 ppm, and the air-score is A. Everything is in order, and the students can work comfortably and safely.

We have received the new printed circuit boards for JaspAir, our CO2 monitor designed for schools. We will now be able to launch production of 20 units, which will be delivered soon to the schools that will test our device.
More info on Jaspair at letsair.org/jaspair

Great tool, many thanks Sean. Comparing, in relative terms, is also very telling: we vary a single parameter and we see the progression of the risk. Example: Risk(at 3000ppm) = 40 x Risk(at 800ppm).

I built AIRE, a free browser tool that estimates airborne COVID risk indoors using the PMC framework.

It also offers an optional “cigarette pack equivalent.”

Why?
Because 3% per event is abstract.

Cumulative harm is easier to grasp on a familiar scale. 🧵

You're right. it is written: "if the level is between 800 and 1500ppm, your ventilation is adequate. You should consider opening windows or doors to improve it more.".

We can always do better, but in most classrooms, reaching this level would already be fantastic.

Ventilation and air quality in education and childcare settings How schools and other education and childcare providers should monitor and manage ventilation and air quality.

Ventilation and air quality in education and childcare settings, a new guidance from 🇬🇧 department of education. UK adopts the global standard for schools: CO2 level must be < 800ppm. The challenge is to make this possible everywhere. H/T @safeairschoolsuk.bsky.social
www.gov.uk/government/p...

Improving indoor environment reduces asthma attacks in adults, study finds Combining home upgrades with health education can close care gaps and significantly improve life for adults living with asthma.

Improving indoor environment reduces asthma attacks in adults, study finds. Combining home upgrades with health education can close care gaps and significantly improve life for adults living with asthma.
stories.tamu.edu/news/2026/02...

EXAMPLES OF DISEASES FROM PATHOGENS THAT CAN BE TRANSMITTED THROUGH THE AIR WE BREATHE Viruses: Adenovirus Bocavirus Varicella zoster virus Coronavirus (MERS, SARS 1, SARS-CoV-2) Influenza type A virus (H1N1, H5N1, …) Influenza type B virus Morbillivirus Mumps virus Rhinovirus Rubivirus rubellae Respiratory Syncytial Virus Variola virus … Associated diseases: Chickenpox Covid-19 Influenza Measles Mumps Common cold Rubella Bronchiolitis Smallpox Bacteria: Bordetella pertussis Corynebacterium diphtheriae Legionella pneumophila Streptococcus pneumoniae Haemophilus influenzae type b Mycobacterium tuberculosis … Associated diseases: Whooping cough Diphtheria Legionella Meningitis Tuberculosis Fungi: Aspergillus Blastomyces dermatitidis Coccidioides immitis … Associated disease: Aspergillosis Legend: Red = There is a vaccine Yellow = There is a vaccine for some strains Purple = There is no vaccine French flag icon = The vaccine is mandatory in France

Of the 11 mandatory vaccines in France, 8 protect against diseases transmitted through the air we breathe. Airborne transmission is the main route of transmission of childhood diseases and needs to be better understood and taken into account by the various stakeholders involved.

Our updated infographic on airborne diseases is now available as a PDF at letsair.org#mediation

The excellent article is from @nypost.com . Sorry.

Infographic titled “Examples of diseases from pathogens that can be transmitted through the air we breathe.” It groups airborne pathogens into viruses, bacteria, and fungi, and connects each to associated diseases. Viruses include adenovirus, coronavirus (MERS, SARS, SARS-CoV-2), influenza A and B, morbillivirus, mumps virus, norovirus, rhinovirus, rubella virus, respiratory syncytial virus, and variola virus, linked to diseases such as chickenpox, COVID-19, influenza, measles, mumps, gastroenteritis, common cold, rubella, bronchiolitis, and smallpox. Bacteria listed include Bordetella pertussis, Corynebacterium diphtheriae, Legionella pneumophila, Streptococcus pneumoniae, Haemophilus influenzae type b, and Mycobacterium tuberculosis, linked to whooping cough, diphtheria, legionella, meningitis, and tuberculosis. Fungi include Aspergillus, Blastomyces dermatitidis, and Coccidioides immitis, associated with aspergillosis. A color legend indicates which diseases have vaccines.

We've updated our infographic on diseases that can be transmitted through the air we breathe, adding Norovirus.

Most viruses can survive for one to several hours in a poorly ventilated room. See the excellent article in @nytimes.com on this topic: nypost.com/2026/02/14/h...

Clean air project brings health boost to two Inishowen Schools Scoil Naomh Bríd, Muff, and iCARE Buncrana received a Smart Air Blast air purifier, donated by Smart Air UK, during a visit attended by Minister Charlie McConalogue and South Inishowen Councillor Jack...

A successful clean air initiative was marked this week with the presentation of a state-of-the-art @smartairuk.bsky.social air purifier to two Inishowen schools, highlighting growing awareness of the importance of indoor air quality for children’s health.
www.donegallive.ie/news/inishow...

"We are now facing the largest measles outbreak since the disease was eliminated from the United States over a quarter-century ago." @sanders.senate.gov

Sadly, other diseases are to be expected: without vaccines, poor indoor air renewal will lead to the spread of airborne diseases.

The 5p Solution: How clean air is transforming attendance and learning in one Hampshire school Generations of pupils have learned in stuffy classrooms filled with recycled air, but a Hampshire school is now breathing new life into the way lessons are taught.

Generations of pupils have learned in stuffy classrooms filled with recycled air, but a Hampshire school is now breathing new life into the way lessons are taught. The impact of installing HEPA filters has been striking.
Poke @safeairschoolsuk.bsky.social
www.portsmouth.co.uk/education/th...

Vaccines effectively protect against many diseases that are transmitted through the air we breathe. Without vaccines, these diseases will spread even more widely because our schools, hospitals, and public places are much less well ventilated than they were a century ago.

JaspAir, our 🐧 CO2 monitor, is designed to be simple, robust, and cheap. A pre-production run of 5 units is underway. We hope to deliver the first JaspAir units to beta-testing teachers in February.

In a kitchen too, JaspAir – our CO2 monitor penguin – can help you know when to ventilate. Red means it's time to ventilate.

The new SenseAir S88 CO2 sensor is now integrated into JaspAir, our CO2 monitor for schools.

The label "v11" means that this is the 11th version of JaspAir that we are improving to allow for small-scale production at a lower cost.

Peaceful armies of penguins are preparing to help schoolchildren around the world better ventilate their classrooms, for their comfort and health.

More information about JaspAir, our CO2 monitor, can be found at letsair.org/jaspair