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This graph shows the C02 levels in my surgery today. Window was open, HEPA’s on, FarUV on & me in a FFP3 with a neg lateral flow this am. As SAFE as I can make it for my dental hygiene patients. It CAN be done🙌🏻 #LotsOfVirusAbout pic.twitter.com/ykTJ8qCCcs— Karen P (@KPTimeWillTell) February 14, 2025
This graph shows the C02 levels in my surgery today. Window was open, HEPA’s on, FarUV on & me in a FFP3 with a neg lateral flow this am. As SAFE as I can make it for my dental hygiene patients. It CAN be done🙌🏻 #LotsOfVirusAbout pic.twitter.com/ykTJ8qCCcs— Karen P (@KPTimeWillTell) February 14, 2025
“This graph shows the C02 levels in my surgery today. Window was open, HEPA’s on, FarUV on & me in a FFP3 with a neg lateral flow this am. As SAFE as I can make it for my dental hygiene patients. It CAN be done🙌🏻 #LotsOfVirusAbout”
·x.com·
This graph shows the C02 levels in my surgery today. Window was open, HEPA’s on, FarUV on & me in a FFP3 with a neg lateral flow this am. As SAFE as I can make it for my dental hygiene patients. It CAN be done🙌🏻 #LotsOfVirusAbout pic.twitter.com/ykTJ8qCCcs— Karen P (@KPTimeWillTell) February 14, 2025
Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room
Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room
“Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room”
Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room
·sciencedirect.com·
Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room
1/ is one hell of a powerful tool which can sit at the pinnacle of a diverse array of infection control measures, potentially eliminating *all* airborne pathogens from our shared indoor spaces.
1/ is one hell of a powerful tool which can sit at the pinnacle of a diverse array of infection control measures, potentially eliminating *all* airborne pathogens from our shared indoor spaces.

“Evidence so far suggests that UVC disinfection technology kills up to 99% of pathogens in the air and on surfaces without harming people and animals present” ‘The mood at the meeting is really upbeat, with everyone looking forward to a new era of clean safe indoor air!’”

·x.com·
1/ is one hell of a powerful tool which can sit at the pinnacle of a diverse array of infection control measures, potentially eliminating *all* airborne pathogens from our shared indoor spaces.
As air relative humidity increases, infectivity of SARS-CoV-2 decreases within water droplets | QRB Discovery | Cambridge Core
As air relative humidity increases, infectivity of SARS-CoV-2 decreases within water droplets | QRB Discovery | Cambridge Core
“we identified a threshold of ≥40% relative humidity as most effective in diminishing SARS-CoV-2 infectivity.”
we identified a threshold of ≥40% relative humidity as most effective in diminishing SARS-CoV-2 infectivity.
·cambridge.org·
As air relative humidity increases, infectivity of SARS-CoV-2 decreases within water droplets | QRB Discovery | Cambridge Core
“It is literally, actively killing me that people don’t mask. No one cares.”
“It is literally, actively killing me that people don’t mask. No one cares.”

“‘It is literally, actively killing me that people don’t mask. No one cares.’

Tinu died less than two months later. She spent her final days sounding the alarm, pleading for healthcare staff to take her safety seriously.

I fight for you, Tinu. I miss you.”

·x.com·
“It is literally, actively killing me that people don’t mask. No one cares.”
Here is the video from today’s hicpac meeting showing that most of them voted against n95 respirators for airborne pathogens.
Here is the video from today’s hicpac meeting showing that most of them voted against n95 respirators for airborne pathogens.
“Here is the video from today’s @CDCgov hicpac meeting showing that most of them voted against n95 respirators for airborne pathogens.”
·x.com·
Here is the video from today’s hicpac meeting showing that most of them voted against n95 respirators for airborne pathogens.
Comparing strategies for the mitigation of SARS-CoV-2 airborne infection risk in tiered auditorium venues
Comparing strategies for the mitigation of SARS-CoV-2 airborne infection risk in tiered auditorium venues

study on COVID-19 in auditoriums found displacement ventilation minimized infection risk, while natural ventilation had highest spread.

Masks, shorter events, and lower occupancy helped reduce risks.

·nature.com·
Comparing strategies for the mitigation of SARS-CoV-2 airborne infection risk in tiered auditorium venues
Opinion: It's time to clean the germs out of our indoor air
Opinion: It's time to clean the germs out of our indoor air
“Over four years later, things are changing. The WHO now finally and fully recognizes COVID-19 is airborne at the institutional level, and has made one of the world’s top aerosol scientists co-chair of their new indoor air advisory group. The WHO also collaborated with particle physicists to develop ARIA, the Airborne Risk Indoor Assessment tool, which models risk of infection for different types of buildings and settings to help us understand how to make indoor air clean.”
·edmontonjournal.com·
Opinion: It's time to clean the germs out of our indoor air
Can the infection risk in elevators be negligible? A comparative study of airborne infection probability in elevators and conference rooms
Can the infection risk in elevators be negligible? A comparative study of airborne infection probability in elevators and conference rooms

“this study investigated the airborne transmission of respiratory diseases in the hospital elevator by comparison to the conference room.”

“The results showed that the infection probability in the elevator with 5 min was higher than that in the conference room with 50 min.”

·sciencedirect.com·
Can the infection risk in elevators be negligible? A comparative study of airborne infection probability in elevators and conference rooms
Pleasure to share a session on Clean Indoor Air at Healthy Work Conference with and and hearing about their work to improve education and inclusiveness in this space.
Pleasure to share a session on Clean Indoor Air at Healthy Work Conference with and and hearing about their work to improve education and inclusiveness in this space.
“Pleasure to share a session on Clean Indoor Air at @unionsaustralia Healthy Work Conference with @plumskyjam and @ColinKinner and hearing about their work to improve education and inclusiveness in this space.”
·x.com·
Pleasure to share a session on Clean Indoor Air at Healthy Work Conference with and and hearing about their work to improve education and inclusiveness in this space.
Opinion: What you should know about COVID this fall
Opinion: What you should know about COVID this fall

“How is COVID-19 spread? When people cough, sneeze or talk, viral particles can be sent through the air and via droplets. Masking helps to prevent droplet spread, and keeping more than two metres apart and staying in a well-ventilated area can help to limit aerosol spread.

While not a predominant cause of transmission, COVID-19 can also be spread through objects contaminated with secretions from an infected person. The incubation period for COVID-19 — the time from exposure to developing an infection — is about two to four days with the current variant.”

·montrealgazette.com·
Opinion: What you should know about COVID this fall
Outbreak investigation of airborne transmission of Omicron (B.1.1.529) - SARS-CoV-2 variant of concern in a restaurant: Implication for enhancement of indoor air dilution
Outbreak investigation of airborne transmission of Omicron (B.1.1.529) - SARS-CoV-2 variant of concern in a restaurant: Implication for enhancement of indoor air dilution
In May of 2021, Hong Kong required air purifers be placed in their restaurants after papers like this showed that you could be infected in just 19 minutes, median exposure time 34 minutes, while eating at a restaurant.
·sciencedirect.com·
Outbreak investigation of airborne transmission of Omicron (B.1.1.529) - SARS-CoV-2 variant of concern in a restaurant: Implication for enhancement of indoor air dilution
What would an adequate COVID response look like?
What would an adequate COVID response look like?
“Refusal to directly communicate 1) how COVID spreads 2) that it can be avoided 3) how it can be avoided while modeling mitigation, makes pandemic communications much more difficult for vulnerable people, activists and marginalized groups attempting to reduce disease burden in their communities. We should not be swimming against the current of public health officials’ poor pandemic hygiene.”
Refusal to directly communicate 1) how COVID spreads 2) that it can be avoided 3) how it can be avoided while modeling mitigation, makes pandemic communications much more difficult for vulnerable people, activists and marginalized groups attempting to reduce disease burden in their communities. We should not be swimming against the current of public health officials’ poor pandemic hygiene.
·thegauntlet.news·
What would an adequate COVID response look like?
The 60-Year-Old Scientific Screwup That Helped Covid Kill
The 60-Year-Old Scientific Screwup That Helped Covid Kill

Oops! Looks like Covid IS airborne, folks.

“All pandemic long, scientists brawled over how the virus spreads. Droplets! No, aerosols! At the heart of the fight was a teensy error with huge consequences…”

All pandemic long, scientists brawled over how the virus spreads. Droplets! No, aerosols! At the heart of the fight was a teensy error with huge consequences.
·wired.com·
The 60-Year-Old Scientific Screwup That Helped Covid Kill
UV STUDIES | Modeling methods to address office building clean air targets
UV STUDIES | Modeling methods to address office building clean air targets
“The results of the study illustrate a significant potential energy-efficiency opportunity provided by GUV technology to realize healthier buildings.”
The results of the study illustrate a significant potential energy-efficiency opportunity provided by GUV technology to realize healthier buildings.
·ledsmagazine.com·
UV STUDIES | Modeling methods to address office building clean air targets
Protecting HCWs and patients: An impossible fix, or an essential one?
Protecting HCWs and patients: An impossible fix, or an essential one?
“We have dedicated our lives to saving lives. And yet we are trapped in a system where infecting each other and our patients has apparently become acceptable. With no end to COVID waves on the horizon (we’re in a substantial one right now), what is the endgame our health-care leaders are hoping for?”
·calgaryherald.com·
Protecting HCWs and patients: An impossible fix, or an essential one?
The Plan to Stop Every Respiratory Virus at Once
The Plan to Stop Every Respiratory Virus at Once

“The Plan to Stop Every Respiratory Virus at Once The benefits of ventilation reach far beyond the coronavirus. What if we stop taking colds and flus for granted, too?”

·theatlantic.com·
The Plan to Stop Every Respiratory Virus at Once
These Are the Drag Artists and Organizers Fighting to Make Queer Spaces More COVID Safe
These Are the Drag Artists and Organizers Fighting to Make Queer Spaces More COVID Safe
“Air purifier lending libraries, mask blocs, and mutual aid initiatives are just a few of the ways activists are making spaces where LGBTQ+ people gather more COVID-safe.”
Air purifier lending libraries, mask blocs, and mutual aid initiatives are just a few of the ways activists are making spaces where LGBTQ+ people gather more COVID-safe.
·them.us·
These Are the Drag Artists and Organizers Fighting to Make Queer Spaces More COVID Safe