David R Tomlinson 🇺🇦💙 Profile picture
One-trick pony: against avoidable death | https://t.co/VCg1WiEH9w | #COVIDisAirborne | #MethodsMatter
Apr 23 10 tweets 4 min read
'4. Provide suitable accurate information on infections to service users, their visitors & any person concerned with providing further support or nursing/medical care in a timely fashion.'

☣️ IPC guidance denying that SARS2 is airborne breaches the code '5. Ensure prompt identification of people who have or are at risk of developing an infection so that they receive timely and appropriate treatment to reduce the risk of transmitting infection to other people.'

☣️ Absence of high risk SARS2 contact tracing breaches the code
Feb 13 14 tweets 6 min read

'a combination of vaccination & a few simple – but effective – changes to the way we run our house meant that we were able to avoid Covid – & avoid a parent’s worst nightmare; being incapacitated & unable to look after your kids'

/1 Thanks to @EJBourke for sharing this piece by husband @MarkTamhane on how they avoided #COVID19.

If you think catching SARS2 from your kids is inevitable, please read it!

Our 10yo unvaccinated [🇬🇧 obvs] twins have just recovered.

Here's how @RachelBotell & I avoided SARS2.

Feb 11 5 tweets 4 min read
@ONS data Feb 2022: Self-reported #LongCovid symptoms persisting for >4 weeks:

🔴 1.3 million - 2.1% 🇬🇧 population

🔴 42% with symptoms for >12 months

ons.gov.uk/peoplepopulati… 836,000 (63%) said their daily activities were limited

244,000 (18%): daily activities ‘limited a lot’

🔴 Fatigue 50%
🔴 Shortness of breath 37%
🔴 Loss of smell 37%
🔴 Loss of taste 28%
🔴 Difficulty concentrating 28%
Feb 10 4 tweets 2 min read
My bad: just spotted this

Risk Estimation to inform risk assessment
(Based on available evidence up to 05/05/20)

/1 Image 'ANNEX 1: Developing an approach for quantitative microbial risk assessment (QMRA) for COVID19

We consider the factors that determine the exposure risk via each of the transmission routes in order to put together a framework for evaluating the risk of infection...

Jan 13 25 tweets 10 min read
It's amazing what you find when you're not looking for it.

@jonotter et al 2016, regarding transmission of SARS, MERS & influenza.



journalofhospitalinfection.com/article/S0195-… Important conclusions:

✅‘Respiratory virus symptoms such as sneezing & coughing result in the generation of virus-containing particles, in a size continuum from 1 to 500 microns [diameter].’

Jan 11 4 tweets 2 min read
Respectfully, surgical masks don't protect as well as FFP2 respirators against inhalation of SARS2-containing aerosols, based on physical laws.

I like the limitations section of this non-randomised, observational study:

1. '...scant instructions for safe use of these devices' 2 Actual mask use not determined
3 'lack of systematic mask fitting tests may have affected our results'
4 Greater incidence of Covid-19 in regions recommending FFP2 use


❌Sub-optimal methods; findings counter to physical laws
❌Low quality data should not inform policy
Jan 10 6 tweets 4 min read
HSE RR619 (2008)

‘HSE’s current stance is that where there is a respiratory risk of infection use of FFP3 devices represents best practice, & where these are not available then FFP2 may be an acceptable, pragmatic compromise.’

Nothing about 'wholly' airborne here @microlabdoc. hse.gov.uk/research/rrhtm… @hughes_eilir @ProfEmer @SafeDavid3 @petermbenglish @mjb302 @LawtonTri @Geraint6Jones @gallagher_rose @BamptonKevin
Jan 10 6 tweets 4 min read
@CommonsSTC Oct 2021

@gstringermp: "Given that air transmission appears to be the main route, do you have a view on the effectiveness of masks?"

@CSA_HSE: "It depends what you mean by masks. I would divide them into two categories."
committees.parliament.uk/oralevidence/2… "First of all, I will talk about face coverings, which are the fluid resistant surgical masks that you see primarily out & about. They are good for source control.

If I am wearing one of those, I am protecting other people from me, essentially."
@ProfEmer @SafeDavid3
Dec 26, 2021 14 tweets 9 min read
Been doing some detective work.

How can the Antimicrobial Resistance and Hospital Acquired Infection (ARHAI) think like this?

Why do they still believe SARS2 to be droplet spread & still fail to protect HCWs with respirators?

@NafeezAhmed @DFisman

/1 Q1. Who controls ARHAI outputs?

Answer: COVID-19 Nosocomial Review Group (CNRG)

‘Act as a mechanism for approving COVID-19 related ARHAI guidance.’

‘Maintain close engagement with SAGE & their nosocomial sub-group, as well as the UK-wide IPC guidance cells.’

Uh oh.
Dec 17, 2021 12 tweets 8 min read
☕️ SARS2 Journal Club

h/t @trishgreenhalgh

'Hidden hazards of SARS-CoV-2 transmission in
hospitals: A systematic review'

Very timely, given #Omicron

@mjb302 @andymoz78 @microlabdoc @LawtonTri
I think you'll like this

doi.org/10.1111/ina.12… 'SARS-CoV-2 can be frequently detected in hospital air since 1:6 air samples were contaminated with SARS2. Airborne SARS2 RNA was detected throughout the hospital, regularly beyond the social distance of 2m from patients even extending up to 7.6m away from the nearest patients.'
Dec 17, 2021 9 tweets 5 min read
Covid-19: Runny nose, headache, and fatigue are commonest symptoms of omicron, early data show

But there follows a truth [👏 @timspector] & a lie [@DHSCgovuk]

bmj.com/content/375/bm… Truth:

'@timspector said the UK was now an international exception in not listing cold-like symptoms as likely indicators of covid infection, noting that the @CDCgov, @WHO & European countries...had all updated their advice.'
Dec 16, 2021 4 tweets 2 min read
The Case for Ultraviolet Germicidal Irradiation (UVGI)

Report for 🇬🇧 & 🏴󠁧󠁢󠁳󠁣󠁴󠁿 Gov, Oct 2020

'As a means of preventing airborne transmission of SARS2 we advocate the immediate installation of...upper room 254nm UVGI in indoor public spaces with low AC/hour &/or recirculated air.' Link to report: www-star.st-and.ac.uk/~kw25/research…

'For the current pandemic...very low doses of UVGI are required to inactivate SARS2 & can be delivered in around twenty-five minutes at current safety limits.'
Dec 15, 2021 4 tweets 7 min read
Dear NHS,

A lifeline for anyone facing another day at work w/o access to airborne PPE - & I know that’s the vast majority of you 💙.

Send this article to your CEO. 👇

The IPC team will prob object but it’s the CEO’s risk.

You MUST be given FFP3 during known/poss COVID19 care. ‘Most of the serious shortcomings in protection of workers…from contracting covid at work arise from the authorities & many employers ignoring legislation & precautionary principles as well as inadequate enforcement, rather than from the existing law being unfit for purpose.’
Dec 9, 2021 5 tweets 2 min read
‘Let us hope that certain problems with the influenza vaccine — such as the failure of vaccination, in some years, to produce the desired increase in protection in previously vaccinated people — do not occur with the SARS-CoV-2 vaccines.’

‘Let us hope…’ nejm.org/doi/full/10.10… @jmcrookston Monto may be a coronavirus expert, but I think he lacks imagination:

‘We need to learn to live with these illnesses, just as we have learned to live with influenza.’

Knowing the health system as I do, I think we’d be better off learning to live without SARS2.
Dec 4, 2021 13 tweets 8 min read
‘UK Legal Position

Biological Agents (such as SARS-CoV-2) are covered under the Control of Substances Hazardous to Health (COSHH) Regulations 2002.

COSHH provides a framework of actions designed to control risk. from exposure to hazardous substances.’


/1 ‘The Approved Code of Practice (ACOP) to COSHH Regulation 7 states that if employers cannot prevent exposure to a biological agent, they should take steps to ensure that it is controlled adequately & consider all the requirements set out in regulation 7(3), (4), (6) and (7).’

Dec 3, 2021 5 tweets 4 min read
Paediatric critical care & ECMO: interim
update Nov 2017

'Paediatric critical care is a highly valued service that saves the lives of children in England every day.'

#OmicronVarient #RWCS?

1/4 '@NHSEngland analysis supports an initial hypothesis that – if the model of paediatric critical care does not change – the services will not be sustainable or affordable in the medium to long term.'

#OmicronVarient #RWCS?

Nov 22, 2021 27 tweets 14 min read
🚨 NEW 🇬🇧

Guidance on IP&C for seasonal respiratory infections including SARS-CoV-2

Welcome to the world of SEASONAL SARS2 [does this sound more 'cuddly' to you?] & alternative reality according to the IPC Cell.


gov.uk/government/pub… Hot on the heels of the new campaign where dCMO @Thomas_Waite states:

'People with COVID-19 release virus particles into the air whenever they speak, breathe or cough & these can linger in unventilated settings.'

Will the IPC Cell sustain the AGP myth?

Nov 20, 2021 4 tweets 1 min read
Problem: RTAs kill drivers

Mechanism: High velocity injuries

Physical laws-based fix: A seat belt

Null hypothesis: A seat belt is w/o effect on RTA death

Randomise drivers: Unblinded=flaw (may affect driver behaviour)

Start RCT

Pre-specified interim analysis shows benefit… Problem: RTAs kill passengers

Mechanism: High velocity injuries

Physical laws-based fix: A passenger seat belt

Null hypothesis: A passenger seat belt is w/o effect on RTA death

Randomise passengers: Unblinded=flaw (may affect driver behaviour)

Nov 18, 2021 11 tweets 7 min read
@WHO director of communications suggests that we need 'a consensus on terminology'; i.e. meaning of the word 'airborne'.

Logical possibilities:

1. She's right: 'airborne' has so many meanings as to render its use invalid.

2. She's wrong: 'airborne' has a single, clear meaning. 🚨 Dictionary evidence

Does this indicate multiple, potentially conflicting meanings, or a single, clear meaning?
Nov 18, 2021 7 tweets 4 min read
Coronavirus: how to stay safe and help prevent the spread - GOV.UK

This guidance needs to be reported for misinformation.

As ever during this pandemic, the 🇬🇧 medico-political complex display an aversion to reporting empirical truths. gov.uk/guidance/covid… THE GOOD

✅ ‘Airborne transmission is a very significant way that the virus circulates.’

Correct: aerosols are formed & exhaled during breathing, speech, singing, coughing & sneezing.

Can you live without breathing? Image
Nov 18, 2021 5 tweets 5 min read
Canada admits aerosols are major source of COVID-19 transmission after nearly two years of denying it wsws.org/en/articles/20… ‘The PHAC’s belated admission constitutes a devastating indictment of the political establishment’s prioritization of corporate profits over human life, which has gone hand-in-hand with a systematic repudiation of a science-based response to the virus.’ @trishgreenhalgh @Ozbilgin