David Osborn
@safedavid3.bsky.social
Health and Safety Consultant
Executive Team Member Covid-19 Airborne Transmission Alliance (CATA)
Core Participant in UK Covid-19 Public Inquiry
Views are my own
Executive Team Member Covid-19 Airborne Transmission Alliance (CATA)
Core Participant in UK Covid-19 Public Inquiry
Views are my own
Pinned
David Osborn
@safedavid3.bsky.social
· Jul 28
🚨🔔 🚨🔔 🚨🔔 🚨🔔 🚨🔔
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
Presentation to SHBN (Safer Healthcare Biosafety Network) on behalf of CATA (Covid Airborne Transmission Alliance) with comment on the UK Covid-19 Public Inquiry Module 2 report published in November.
tinyurl.com/DO-SHBN-21-1...
(Apologies: Tech issues prevented earlier posting)
tinyurl.com/DO-SHBN-21-1...
(Apologies: Tech issues prevented earlier posting)
Presentation by David Osborn to the Safer Healthcare Biosafety Network (21 November 2025)
David Osborn's presentation to the Safer Healthcare Biosafety Network
tinyurl.com
January 28, 2026 at 6:11 PM
Presentation to SHBN (Safer Healthcare Biosafety Network) on behalf of CATA (Covid Airborne Transmission Alliance) with comment on the UK Covid-19 Public Inquiry Module 2 report published in November.
tinyurl.com/DO-SHBN-21-1...
(Apologies: Tech issues prevented earlier posting)
tinyurl.com/DO-SHBN-21-1...
(Apologies: Tech issues prevented earlier posting)
Reposted by David Osborn
Millions of people have died because of this widespread incompetence of the #WHO!
Thank you for adding more information about the outrage of someone who understands public health, like me.
Thank you for adding more information about the outrage of someone who understands public health, like me.
January 10, 2026 at 3:37 PM
Millions of people have died because of this widespread incompetence of the #WHO!
Thank you for adding more information about the outrage of someone who understands public health, like me.
Thank you for adding more information about the outrage of someone who understands public health, like me.
SURGICAL MASKS DO NOT PROTECT
So encouraging to see the sheer strength of feeling amongst so many highly-respected scientists & medical practitioners from across the world making representations to WHO
This letter from World Health Network is a must-read
tinyurl.com/WHN-Letter-t...
So encouraging to see the sheer strength of feeling amongst so many highly-respected scientists & medical practitioners from across the world making representations to WHO
This letter from World Health Network is a must-read
tinyurl.com/WHN-Letter-t...
Open Letter to WHO: A Call for the Universal use of Respirators in Healthcare - WHN
January 7, 2026 The letter below (a button to download it as a .pdf file is at the bottom of this page) was sent to seven top officials at the World Health Organization on Wednesday 7 January. Press c...
tinyurl.com
January 10, 2026 at 8:09 AM
SURGICAL MASKS DO NOT PROTECT
So encouraging to see the sheer strength of feeling amongst so many highly-respected scientists & medical practitioners from across the world making representations to WHO
This letter from World Health Network is a must-read
tinyurl.com/WHN-Letter-t...
So encouraging to see the sheer strength of feeling amongst so many highly-respected scientists & medical practitioners from across the world making representations to WHO
This letter from World Health Network is a must-read
tinyurl.com/WHN-Letter-t...
Reposted by David Osborn
As the health and safety specialist in CATA (Covid Airborne Transmission Alliance - a core participant in the Covid Inquiry), I am very involved with healthcare H&S scandals.
In particular the betrayal of healthcare workers by HM Gov’t during COVID.
May I offer a few thoughts…
#2/21
In particular the betrayal of healthcare workers by HM Gov’t during COVID.
May I offer a few thoughts…
#2/21
December 7, 2025 at 9:35 PM
As the health and safety specialist in CATA (Covid Airborne Transmission Alliance - a core participant in the Covid Inquiry), I am very involved with healthcare H&S scandals.
In particular the betrayal of healthcare workers by HM Gov’t during COVID.
May I offer a few thoughts…
#2/21
In particular the betrayal of healthcare workers by HM Gov’t during COVID.
May I offer a few thoughts…
#2/21
Brilliant article by Rebecca Thomas (the Independent): tinyurl.com/yksjxj5b
and Victoria Macdonald (Channel 4 News): tinyurl.com/3dn8mwx5
They've covered the 'formalin scandal' brilliantly.
#1/21
@channel4news.bsky.social
@the-independent.com
@vsmacdonald.bsky.social
@rebeccasmt.bsky.social
and Victoria Macdonald (Channel 4 News): tinyurl.com/3dn8mwx5
They've covered the 'formalin scandal' brilliantly.
#1/21
@channel4news.bsky.social
@the-independent.com
@vsmacdonald.bsky.social
@rebeccasmt.bsky.social
December 7, 2025 at 9:31 PM
Brilliant article by Rebecca Thomas (the Independent): tinyurl.com/yksjxj5b
and Victoria Macdonald (Channel 4 News): tinyurl.com/3dn8mwx5
They've covered the 'formalin scandal' brilliantly.
#1/21
@channel4news.bsky.social
@the-independent.com
@vsmacdonald.bsky.social
@rebeccasmt.bsky.social
and Victoria Macdonald (Channel 4 News): tinyurl.com/3dn8mwx5
They've covered the 'formalin scandal' brilliantly.
#1/21
@channel4news.bsky.social
@the-independent.com
@vsmacdonald.bsky.social
@rebeccasmt.bsky.social
Poster recently published by NHS Scotland.
Incorrect, dangerous guidance to the public about spread of diseases like flu, COVID-19 etc and how hand-washing is key to keeping themselves safe (would you believe!)
Formal complaint lodged.
See: tinyurl.com/52wbmye9
Incorrect, dangerous guidance to the public about spread of diseases like flu, COVID-19 etc and how hand-washing is key to keeping themselves safe (would you believe!)
Formal complaint lodged.
See: tinyurl.com/52wbmye9
November 26, 2025 at 1:13 AM
Poster recently published by NHS Scotland.
Incorrect, dangerous guidance to the public about spread of diseases like flu, COVID-19 etc and how hand-washing is key to keeping themselves safe (would you believe!)
Formal complaint lodged.
See: tinyurl.com/52wbmye9
Incorrect, dangerous guidance to the public about spread of diseases like flu, COVID-19 etc and how hand-washing is key to keeping themselves safe (would you believe!)
Formal complaint lodged.
See: tinyurl.com/52wbmye9
Press Releases Archives - British Occupational Hygiene Society (BOHS)
www.bohs.org
November 21, 2025 at 11:52 AM
On Thurs 20th, Lady Hallett publishes her module 2 report.
We wait with interest to see how it covers the deception wrought upon HCWs that: a) Covid is droplet/fomite, but not airborne b) Flimsy Fluid Resistant Surgical Masks are 'PPE' and will keep you safe.
We wait with interest to see how it covers the deception wrought upon HCWs that: a) Covid is droplet/fomite, but not airborne b) Flimsy Fluid Resistant Surgical Masks are 'PPE' and will keep you safe.
November 17, 2025 at 11:39 PM
On Thurs 20th, Lady Hallett publishes her module 2 report.
We wait with interest to see how it covers the deception wrought upon HCWs that: a) Covid is droplet/fomite, but not airborne b) Flimsy Fluid Resistant Surgical Masks are 'PPE' and will keep you safe.
We wait with interest to see how it covers the deception wrought upon HCWs that: a) Covid is droplet/fomite, but not airborne b) Flimsy Fluid Resistant Surgical Masks are 'PPE' and will keep you safe.
📢 Children have been bullied by adults and children, denied remote education & families threatened with fines – just for trying to stay safe in a pandemic.
This is the reality for Clinically Vulnerable families.
Read CVF's new blog ahead of the #CovidInquiry children’s module👇 which starts 29 Sep
This is the reality for Clinically Vulnerable families.
Read CVF's new blog ahead of the #CovidInquiry children’s module👇 which starts 29 Sep
September 21, 2025 at 7:22 PM
📢 Children have been bullied by adults and children, denied remote education & families threatened with fines – just for trying to stay safe in a pandemic.
This is the reality for Clinically Vulnerable families.
Read CVF's new blog ahead of the #CovidInquiry children’s module👇 which starts 29 Sep
This is the reality for Clinically Vulnerable families.
Read CVF's new blog ahead of the #CovidInquiry children’s module👇 which starts 29 Sep
Reposted by David Osborn
[27 Jun 2025] @DrTedros at WHO media briefing:
“We cannot talk about COVID-19 in the past tense. Although the crisis has passed, the virus remains.
It continues to evolve, it continues to kill, and millions of people continue to live with post COVID-19 condition or long COVID.”
“We cannot talk about COVID-19 in the past tense. Although the crisis has passed, the virus remains.
It continues to evolve, it continues to kill, and millions of people continue to live with post COVID-19 condition or long COVID.”
June 29, 2025 at 1:08 PM
[27 Jun 2025] @DrTedros at WHO media briefing:
“We cannot talk about COVID-19 in the past tense. Although the crisis has passed, the virus remains.
It continues to evolve, it continues to kill, and millions of people continue to live with post COVID-19 condition or long COVID.”
“We cannot talk about COVID-19 in the past tense. Although the crisis has passed, the virus remains.
It continues to evolve, it continues to kill, and millions of people continue to live with post COVID-19 condition or long COVID.”
Exercise Pegasus - The UK Prepares for Pandemic simulation.
I wonder whether key stakeholders will be invited to join as participants or observers?
By "key stakeholders” I mean those who will die or be seriously harmed when Gov UK gets it wrong (again!)
I wonder whether key stakeholders will be invited to join as participants or observers?
By "key stakeholders” I mean those who will die or be seriously harmed when Gov UK gets it wrong (again!)
September 14, 2025 at 2:00 AM
Exercise Pegasus - The UK Prepares for Pandemic simulation.
I wonder whether key stakeholders will be invited to join as participants or observers?
By "key stakeholders” I mean those who will die or be seriously harmed when Gov UK gets it wrong (again!)
I wonder whether key stakeholders will be invited to join as participants or observers?
By "key stakeholders” I mean those who will die or be seriously harmed when Gov UK gets it wrong (again!)
🚨🚨🚨 STOP PRESS 🚨🚨🚨
Paper published by eminent UK scientists compare the effectiveness of PPE and other risk controls for protecting healthcare workers against Covid infections.
academic.oup.com/annweh/artic...
Powered hoods most effective FFP3s almost as effective.
FRSMs very poor.
Paper published by eminent UK scientists compare the effectiveness of PPE and other risk controls for protecting healthcare workers against Covid infections.
academic.oup.com/annweh/artic...
Powered hoods most effective FFP3s almost as effective.
FRSMs very poor.
The relative effectiveness of personal protective equipment and environmental controls in protecting healthcare workers from Covid-19
AbstractObjectives. Our aim was to explore the probable effectiveness of personal protective equipment (PPE) and environmental controls in protecting healt
academic.oup.com
September 14, 2025 at 12:40 AM
🚨🚨🚨 STOP PRESS 🚨🚨🚨
Paper published by eminent UK scientists compare the effectiveness of PPE and other risk controls for protecting healthcare workers against Covid infections.
academic.oup.com/annweh/artic...
Powered hoods most effective FFP3s almost as effective.
FRSMs very poor.
Paper published by eminent UK scientists compare the effectiveness of PPE and other risk controls for protecting healthcare workers against Covid infections.
academic.oup.com/annweh/artic...
Powered hoods most effective FFP3s almost as effective.
FRSMs very poor.
🚨😷🚨😷🚨😷🚨😷
BREAKING NEWS
At last, in the UK, we now have official guidance on the use of respirators (FFP3) vs Fluid Resistant Surgical Masks (FRSM) which has been prepared SPECIFICALLY FOR THE HEALTHCARE SECTOR.
🚨😷🚨😷🚨😷🚨😷
BREAKING NEWS
At last, in the UK, we now have official guidance on the use of respirators (FFP3) vs Fluid Resistant Surgical Masks (FRSM) which has been prepared SPECIFICALLY FOR THE HEALTHCARE SECTOR.
🚨😷🚨😷🚨😷🚨😷
August 22, 2025 at 11:51 PM
🚨😷🚨😷🚨😷🚨😷
BREAKING NEWS
At last, in the UK, we now have official guidance on the use of respirators (FFP3) vs Fluid Resistant Surgical Masks (FRSM) which has been prepared SPECIFICALLY FOR THE HEALTHCARE SECTOR.
🚨😷🚨😷🚨😷🚨😷
BREAKING NEWS
At last, in the UK, we now have official guidance on the use of respirators (FFP3) vs Fluid Resistant Surgical Masks (FRSM) which has been prepared SPECIFICALLY FOR THE HEALTHCARE SECTOR.
🚨😷🚨😷🚨😷🚨😷
Shouldn't be necessary to order a Government Agency to just do its job - but hey-ho...
Please sign.
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings
petition.parliament.uk/petitions/73...
Please sign.
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings
petition.parliament.uk/petitions/73...
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings
Ensure that the UK Health Security Agency (UKHSA) monitors, and reports on, the numbers of COVID infections that occur in healthcare settings through its routine surveillance programmes, and advises o...
petition.parliament.uk
August 20, 2025 at 8:28 PM
Shouldn't be necessary to order a Government Agency to just do its job - but hey-ho...
Please sign.
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings
petition.parliament.uk/petitions/73...
Please sign.
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings
petition.parliament.uk/petitions/73...
Reposted by David Osborn
I'm overwhelmed by the public support for a CSA National Standard in 🇨🇦 for precautionary universal N95 use in healthcare
From all over the world
Like this comment from @safedavid3.bsky.social
From all over the world
Like this comment from @safedavid3.bsky.social
August 17, 2025 at 3:55 PM
I'm overwhelmed by the public support for a CSA National Standard in 🇨🇦 for precautionary universal N95 use in healthcare
From all over the world
Like this comment from @safedavid3.bsky.social
From all over the world
Like this comment from @safedavid3.bsky.social
🚨🔔 🚨🔔 🚨🔔 🚨🔔 🚨🔔
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
July 28, 2025 at 1:35 AM
🚨🔔 🚨🔔 🚨🔔 🚨🔔 🚨🔔
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
HSE are holding their AGM on 29th July.
I have tabled 3 questions in advance.
These may be of interest to healthcare workers - those still in service and those who were injured by Covid and can no longer work (or are limited as to what they can do).
Dr Phil Hammond reveals in Private Eye that CATA (the Covid Airborne Transmission Alliance) is threatening to take the UK Government to Court for a judicial review.
Pre-action protocols require the parties to attempt to resolve their issues out of Court.
Pre-action protocols require the parties to attempt to resolve their issues out of Court.
July 10, 2025 at 8:58 PM
Dr Phil Hammond reveals in Private Eye that CATA (the Covid Airborne Transmission Alliance) is threatening to take the UK Government to Court for a judicial review.
Pre-action protocols require the parties to attempt to resolve their issues out of Court.
Pre-action protocols require the parties to attempt to resolve their issues out of Court.
🚨 🚨 🚨 🚨 🚨 🚨
Absolutely essential viewing for any doctor, nurse, midwife, porter or other healthcare worker wishing to survive the next pandemic of an airborne pathogen.
Watch this interview at all costs...
tinyurl.com/yc74vj66
🚨 🚨 🚨 🚨 🚨 🚨
#1 of 8
Absolutely essential viewing for any doctor, nurse, midwife, porter or other healthcare worker wishing to survive the next pandemic of an airborne pathogen.
Watch this interview at all costs...
tinyurl.com/yc74vj66
🚨 🚨 🚨 🚨 🚨 🚨
#1 of 8
June 13, 2025 at 11:24 AM
🚨 🚨 🚨 🚨 🚨 🚨
Absolutely essential viewing for any doctor, nurse, midwife, porter or other healthcare worker wishing to survive the next pandemic of an airborne pathogen.
Watch this interview at all costs...
tinyurl.com/yc74vj66
🚨 🚨 🚨 🚨 🚨 🚨
#1 of 8
Absolutely essential viewing for any doctor, nurse, midwife, porter or other healthcare worker wishing to survive the next pandemic of an airborne pathogen.
Watch this interview at all costs...
tinyurl.com/yc74vj66
🚨 🚨 🚨 🚨 🚨 🚨
#1 of 8
Please support this petition which directs UKHSA to monitor COVID infections which occur in particular settings.
petition.parliament.uk/petitions/70...
An open and transparent insight is needed into HealthCare Associated Infections
Please re-post widely. Only a few days to go
petition.parliament.uk/petitions/70...
An open and transparent insight is needed into HealthCare Associated Infections
Please re-post widely. Only a few days to go
Petition: Direct the UKHSA to monitor COVID infections that occur in particular settings.
Ensure that the UK Health Security Agency (UKHSA) monitors, and reports on, the numbers of COVID infections that occur in healthcare settings through its routine surveillance programmes, and advises o...
petition.parliament.uk
May 24, 2025 at 2:22 PM
Please support this petition which directs UKHSA to monitor COVID infections which occur in particular settings.
petition.parliament.uk/petitions/70...
An open and transparent insight is needed into HealthCare Associated Infections
Please re-post widely. Only a few days to go
petition.parliament.uk/petitions/70...
An open and transparent insight is needed into HealthCare Associated Infections
Please re-post widely. Only a few days to go
Reposted by David Osborn
Covid-19 is airborne.
Poor indoor air quality in healthcare settings increases infection risks for staff, patients & visitors.
We’re calling for urgent action. Read our second position statement:
🔗 shh-uk.org/shh-uk-posit...
#SafeAir4All #ProtectHCWs #LongCovid
Poor indoor air quality in healthcare settings increases infection risks for staff, patients & visitors.
We’re calling for urgent action. Read our second position statement:
🔗 shh-uk.org/shh-uk-posit...
#SafeAir4All #ProtectHCWs #LongCovid
May 21, 2025 at 12:26 PM
Covid-19 is airborne.
Poor indoor air quality in healthcare settings increases infection risks for staff, patients & visitors.
We’re calling for urgent action. Read our second position statement:
🔗 shh-uk.org/shh-uk-posit...
#SafeAir4All #ProtectHCWs #LongCovid
Poor indoor air quality in healthcare settings increases infection risks for staff, patients & visitors.
We’re calling for urgent action. Read our second position statement:
🔗 shh-uk.org/shh-uk-posit...
#SafeAir4All #ProtectHCWs #LongCovid
CATA (Covid Airborne Transmission Alliance) has given accounts of its involvement with the UK COVID-19 Inquiry to the SHBN
The presentations may be found here:
tinyurl.com/yc33td7z
Includes a summary of CATA's representations to Ministers and Chief Nursing Officers (who continue to remain silent).
The presentations may be found here:
tinyurl.com/yc33td7z
Includes a summary of CATA's representations to Ministers and Chief Nursing Officers (who continue to remain silent).
Presentation from David Osborn to the Safer Healthcare Biosafety Network (28 March 2025)
David Osborn, health and safety consultant and member of the Covid Airborne Transmission Alliance (CATA), has given an account of CATA’s journey through the Covid-19 Public Inquiry to the Safer Health...
tinyurl.com
May 20, 2025 at 11:14 AM
CATA (Covid Airborne Transmission Alliance) has given accounts of its involvement with the UK COVID-19 Inquiry to the SHBN
The presentations may be found here:
tinyurl.com/yc33td7z
Includes a summary of CATA's representations to Ministers and Chief Nursing Officers (who continue to remain silent).
The presentations may be found here:
tinyurl.com/yc33td7z
Includes a summary of CATA's representations to Ministers and Chief Nursing Officers (who continue to remain silent).
Reposted by David Osborn
NB @ashleydaltonmp.bsky.social
Come clean! Improve and save lives, get people's health and wellbeing back on track for a more productive workforce (and better economic growth)!
Come clean! Improve and save lives, get people's health and wellbeing back on track for a more productive workforce (and better economic growth)!
May 4, 2025 at 12:17 PM
NB @ashleydaltonmp.bsky.social
Come clean! Improve and save lives, get people's health and wellbeing back on track for a more productive workforce (and better economic growth)!
Come clean! Improve and save lives, get people's health and wellbeing back on track for a more productive workforce (and better economic growth)!
Reposted by David Osborn
A second mention of our beloved wall in Parliament today shows an understanding that the wall is an ongoing thing, a living memorial to our beloved dead. ❤️
January 16, 2025 at 8:53 PM
A second mention of our beloved wall in Parliament today shows an understanding that the wall is an ongoing thing, a living memorial to our beloved dead. ❤️
🚨🚨🚨🚨🚨🚨🚨🚨
CATA (The Covid Airborne Transmission Alliance) has, once again, written to Health Minister, Ashley Dalton, on the topic airborne transmission of Covid-19 and other diseases and her stated refusal to change IPC guidance.
Our letter can be found here: tinyurl.com/ykvftvdu
/1 of 11
CATA (The Covid Airborne Transmission Alliance) has, once again, written to Health Minister, Ashley Dalton, on the topic airborne transmission of Covid-19 and other diseases and her stated refusal to change IPC guidance.
Our letter can be found here: tinyurl.com/ykvftvdu
/1 of 11
tinyurl.com
May 3, 2025 at 10:22 PM
🚨🚨🚨🚨🚨🚨🚨🚨
CATA (The Covid Airborne Transmission Alliance) has, once again, written to Health Minister, Ashley Dalton, on the topic airborne transmission of Covid-19 and other diseases and her stated refusal to change IPC guidance.
Our letter can be found here: tinyurl.com/ykvftvdu
/1 of 11
CATA (The Covid Airborne Transmission Alliance) has, once again, written to Health Minister, Ashley Dalton, on the topic airborne transmission of Covid-19 and other diseases and her stated refusal to change IPC guidance.
Our letter can be found here: tinyurl.com/ykvftvdu
/1 of 11