She was recognized by Time Magazine as one of the 100 rising stars from across industries and around the world for 2022 ( https://time.com/collection/time100-next-2022/6213809/hannah-davis/ ). 2/

@ahandvanish@twitter.com was also brave enough to share her real-life experience of COVID infection that drastically impacted her processing speed ( https://twitter.com/ahandvanish/status/1616998955610423296 ). She happened to have done some neuro testing just before her COVID infection where she scored being faster than 96% of people. 3/

After her COVID infection, she started having brain issues and decided to redo the test again where she found out her processing speed had dropped from top 96% of people down to only faster than 14% of people. 4/

Hannah explains in her thread how low processing speed affects everything from basic communication with people (talking, texting) not only in how long it takes but how much information you understand about what you are reading/hearing. This unfortunately makes relationships harder to maintain. 5/

She goes on to describe how actions that require you to make fast decisions such as driving are much scarier or often not possible to do at all. Even common sense decision making is related to processing speed and can be difficult.

Processing speed also impacts memory by limiting how fast you can register memories and emotional awareness in how long it takes to know how you are feeling. Low processing speed ultimately impacts identity in a serious way. 6/

"Processing speed impacts how much you can hold in your head, how you weave the world together and make sense of it, the thoughts that come up when you think about the people, places, ideas that you love. It turns those processes into just a void, a blank wall."

Hannah Davis wants people to understand what can happen after you become infected with COVID and how much #LongCOVID can change you, potentially permanently. This is not just a "mild" virus and should not be treated as such. 7/

Long COVID is not just happening to her or a small number of people, but it is estimated that at least 65 million people worldwide have Long COVID with cases increasing daily. Hannah Davis and others have put together and published major findings, mechanisms and recommendations on the subject ( https://www.nature.com/articles/s41579-022-00846-2 ). 8/

This is why it is so important that we improve the infrastructure to provide clean air like we did for water to end the cholera epidemics two centuries ago ( https://thetyee.ca/Analysis/2023/01/11/Revolution-Clean-Indoor-Air/ ). 9/

Unfortunately we can't easily see how dirty the air is and how poor ventilation is in many locations including schools and workplaces but if you could see the air in some places, it would look more like the left glass of water compared to the right glass of water ( https://twitter.com/DFisman/status/1616459161931337729 ).

Would you drink the glass of water on the left? If not, why are you still breathing in dirty air in poorly ventilated indoor spaces? 10/

If spaces are not being regularly tested and monitored, you may have no idea how clean (or not) the air is that you are constantly breathing in or if equipment is actually functioning properly. 11/

For example, look at these two Corsi-Rosenthal (CR) boxes and how dirty the filters got in a school after 7 months despite have windows open 95% of the time and CO2 levels below 1200 ppm ( https://twitter.com/Cyber_Murphy/status/1616481603022163969 ).

They were still removing that much crap from the air that otherwise would have been breathed in by our children and the teacher. 12/

Do you commute to work using the subway? Check out how dirty the filter on this respirator got (compared to the brand new clean one beside) after a few months taking the subway 2-3 times a week ( https://twitter.com/jasmith_yorku/status/1616814435208761344 ). People not wearing a respirator are all breathing this into their lungs every day they commute. 13/

We breathe so much more air (11,000L) than we drink water (4L) or consume food (2L) every day so it is even more important that we ensure we are breathing in clean air ( https://www.nasa.gov/mission_pages/cloudsat/news/air-water.html ). This image really helps you understand the relative difference in the amount ( https://twitter.com/akm5376/status/1616494710784397314 ). 14/

Did you know if you measure the amount of CO2 in an indoor space you can actually calculate how much of other people's exhaled breath you are breathing in? This handy calculator will help you ( https://docs.google.com/spreadsheets/d/1iGpS3zacl79GuPduH7QHjBWQisT8nHlxFLgXPE1Xh0U/edit?usp=sharing ). 15/

I have seen some school classrooms measure higher than 3,000 ppm of CO2 which means all of those children are breathing in 28.3 liters of other people's breath every hour! Can you imagine yourself or your child breathing in the equivalent of 14 bottles of pop full of other people's air backwash every hour? 16/

If you think it too hard to upgrade the infrastructure in current schools and buildings, Engineers are up for the challenge. They raised entire cities to install city-wide sewage (Chicago) and change drainage (Seattle) almost 175 years ago to combat harmful pathogens ( https://mstdn.science/@jeffgilchrist/109580644936864484 ). 17/