1/ Seven Hard and Crucial Lessons of Covid-19

An invisible virus exposes critical blind spots in science and society. But will we learn?

Very useful article to reflect on the pandemic's lessons

elemental.medium.com/7-hard-and-cru…

By @RobertRoyBritt
2/ Lesson 1: Virus science just underwent a paradigm shift

"Sanitizing groceries and drowning our homes with bleach was wrongheaded, in hindsight. The main mode of transmission is through the air, by breathing in aerosols that contain the virus”
3/ L1 (cont):

"@WHO & @CDCgov have been slow to acknowledge the outsized role of airborne spread and to translate what leading experts have been saying since last spring into loud and clear advice."

“Millions of people have been infected because we emphasized defending...
4/ ...ourselves against a mode of transmission that’s minor (surfaces) while ignoring the major one (air).”

“Most or all respiratory viruses likely transmit through the air. We need to prepare for the next pandemic or the seasonal flu [by] building on this paradigm shift"
5/ Other lessons:

2. We were not prepared for this
3. Viruses will exploit every opportunity we give them
4. Novel viruses should never be taken lightly, by anyone
5. In-school learning is a foundation of our society
6/ Other lessons (cont.):

6. Social inequities are widespread, debilitating, deadly, and enduring
7. We have two economies

• • •

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More from @jljcolorado

1 Apr
1/ DONACIÓN DE MEDIDORES DE CO2 A LATINOAMÉRICA

Gracias a todos/as los que han contribuido a la campaña, que junto a los 10 que dono yo, nos da para 5 medidores +, en total 15.

2/ Con estos son 67 los que hemos donado (si no recuerdo mal), y llegamos a muchos países donde no habíamos llegado antes:

Venezuela, Honduras, Panamá, Guatemala, Uruguay, Brasil, El Salvador

Además de nuevos envíos a Ecuador, Chile, Paraguay, Colombia, México.
3/ Si echan de menos a Argentina es porque van muy por delante y están armando centenares de sus propios medidores. Sigan a @jorgeluisaliaga para los detalles.

Y como estos salen de EEUU no se pueden enviar a España tampoco.

A ambos países hemos enviado muchos medidores antes.
Read 9 tweets
31 Mar
Aerosol Scientists Try to Clear the Air About COVID-19 Transmission

"Medical textbooks have descriptions of virus transmission that are not consistent with basic physics"

By @jrdscience in @AGU_Eos (Official pub. of American Geophysical Union @theAGU)

eos.org/articles/aeros…
2/ "@WHO’s definition of respiratory droplets is wrong. Cloud droplets are around 20 micrometers and they don’t fall to the ground, he said. That means that droplets of larger size could be airborne longer than the WHO acknowledges."
3/ “It’s just absurd”. “This still is the official statement of the @WHO, and they have refused to correct it for a year.”

"@kprather88 and others created an open-source document of frequently asked questions (FAQ) about airborne spread."[tinyurl.com/faqs-aerosol]
Read 4 tweets
30 Mar
1/ Parece que en España damos 1 paso para adelante y 2 para atrás...

Nueva ley ha salido hoy:

- Grave error: no obliga a llevar mascarillas en aire compartido por no convivientes. En todo momento, AUNQUE SE PUEDA GUARDAR DISTANCIA.
lavozdegalicia.es/noticia/socied…
2/ No es tan difícil de entender por qué hay que llevar mascarilla en interiores EN TODO MOMENTO, independientemente de la distancia.

Hay miles de brotes de superpropagación, todos así: interiores, con distancia, sin mascarilla.

3/ O más fácil de forma gráfica:

[puntos rojos representan el virus, y puntos negros el CO2)

De @numeroteca (numeroteca.org/cat/en-el-aire/)
Read 11 tweets
29 Mar
1/ A very good article in @elpaisinenglish about how to avoid becoming infected with COVID-19 by breathing the air exhaled by others:

(By the team that brought you "A room, a bar, and a classroom")

english.elpais.com/usa/2021-03-29…
2/ Humans exhale CO2. Our metabolism "burns" the foot we eat (carbohydrates, fats, proteins) into CO2 and other products (H2O, urea etc.) to extract energy.

Exhaled air has ~4% CO2 (40000 parts-per-million, or ppm). It is quickly diluted as it mixed w/ ambient air.
3/ We get COVID when we inhale virus-containing aerosols exhaled by others.

Mainly in 2 situations: (1) in close proximity because we inhale much more of the exhaled air of the other person then.

Distance reduces infection mainly because we breathe less of that exhaled air.
Read 17 tweets
28 Mar
1/ A sad anniversary: 1 year since one of the worst errors in the history of Public Health

SARS-CoV-2 is mostly transmitted through the air

But @WHO said, just a year ago, "FACT: IT IS NOT AIRBORNE"

And that saying it was airborne was "misinformation"

2/ We all make mistakes. But very important to correct them clearly

After saying loudly that virus only went through surfaces & large spray droplets, @WHO refuses to explain clearly that SARS-CoV-2 is airborne

Have NOT explained that their "FACT" of a year ago was a huge error
3/ It means that people don't know how to protect themselves, because they haven't explained clearly how virus is transmitted:

Like invisible smoke exhaled by the infected. We get infected by inhaling it

So ppl don't understand that indoors is dangerous despite distance
Read 13 tweets
28 Mar
1/ Aniversario funesto: 1 año de uno de los errores más grandes en la historia de la salud publica.

El SARS-CoV-2 se transmite sobretodo por el aire

Pero la OMS @WHO, justo hace un año, dijo que estaban seguros de que no, y que decirlo era "desinformación"!!

#CovidEstaEnElAire
2/ Todos metemos la pata, pero es importante corregir

El problema es q después de gritar que el virus sólo va por superficies y gotas grandes, @WHO se niega a explicar claramente que el virus va por el aire

Y no han explicado por ejemplo q ese mensaje de hace 1 año es un error
3/ Eso hace que la gente no se sepa proteger, porque no le hemos explicado cómo se transmite el virus: como un humo invisible que exhalan los infectados, y podemos inhalar en infectarnos.

Y la gente no entiende que interiores son peligrosos a pesar de distancia.

de @numeroteca
Read 13 tweets

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