With generous donations and discounts from @AranetIoT
2/ In short, CO2 is an indicator of how much exhaled air (and thus potentially virus) is present in indoor air.
Portable CO2 meters allow us to identify poorly ventilated spaces, and improve ventilation (e.g. adjust windows, esp. important if outdoors is hot or cold)
3/ The linked thread has an extensive explanation and links to other documents and scientific papers:
4/ If you know someone in Southeast Asia who may be interested, please send this thread to them, and encourage them to apply.
We can donate meters for sure to Thailand, Philippines, Indonesia, Malaysia, Vietnam, Singapore.
5/ Not sure yet whether we can send donations to Cambodia, Myanmar, Laos, East Timor, Brunei, but we will try. If you live in those countries, please apply in the form:
6/ We do need to raise some funds for this campaign. @AranetIoT is donating 35 meters, and selling the other 35 at a deep discount. If you can afford a donation, please do so here (everything does to the campaign, minus 1% GoFundMe fee):
1/ NEW CAMPAIGN: I'M HELPING @zerocovidthai (with generous support from @AranetloT) to DONATE CO2 METERS to SOUTHEAST ASIA
COVID-19 is mostly transmitted through the air, by breathing in infectious aerosols, in close proximity or in shared room air (thelancet.com/journals/lance…)
2/ For that reason, this is an indoor-dominated pandemic. It is much easier to be infected indoors than outdoors (academic.oup.com/jid/article/22…).
The best infection prevention strategy is do everything that you can outdoors
3/ But we have to go indoors at times.
Measuring the virus in the air is difficult, slow, and expensive.
CO2 indoors marks the presence of exhaled air, and serves as a proxy for the virus (cartoon from @numeroteca)
Un detalle es que la carta de los 239 científicos se publicó en julio 2020, no en abril como dice el artículo. Tal vez se lo dije mal al hablar deprisa.
Tambien la 1a frase del articulo "Es prácticamente imposible que las miles de gotitas que emitimos al hablar infecten a las personas y los objetos que nos rodean." no es algo que diría yo. Porque no es imposible, simplemente es una forma seguramente poco importante de contagio.
1/ The article "A room, a bar, and a class: how the coronavirus is spread through the air" in @elpaisinenglish has just won the Ortega y Gasset Prize, the most prestigious for the Spanish language press.
3/ The article that won the award was based on our shared-room air transmission estimator. It remains correct, although with the new variants transmission goes up some (the estimator allows taking this into account).
1/ El artículo de @el_pais "Un salón, un bar, y una clase: así contagia el coronavirus en el aire" acaba de ganar el Premio Ortega y Gasset, el más prestigioso del periodismo en español.
2/ Es un artículo extraordinario, y os recomiendo mucho leerlo si no lo habíais hecho. Sigue siendo correcto (aunque habría que aumentar un poco los contagios por las variantes).
1/ A great paper by @trishgreenhalgh explaining the debate over airborne transmission during the pandemic.
Although airborne transmission is the only important mode of transmission, it was ignored by @WHO and the Public Health establishment. This paper explains why & how.
2/ "Political and policy actors at international, national, and regional level aligned—predominantly though not invariably—with medical scientific orthodoxy which promoted the droplet theory of transmission and considered aerosol transmission unproven or of doubtful relevance."
3/ "This dominant scientific sub-field centred around the clinical discipline of infectious disease control, in which leading actors were hospital clinicians aligned with the evidence-based medicine movement."