COVID HOSPITALISATIONS, a thread🧵

In case anyone still believes that changing the Covid testing policy in hospitals back in April hasn’t really affected the hospitalisation data, this chart is just for you.

Please take a good look at it.

It tells a very interesting story… Image
You can quite clearly see the point where Covid hospitalisations decouple from the PCR positivity rate…

…and it’s no coincidence that it falls on EXACTLY 1 April 2023. Image
1 April is the date that Covid testing policy in hospitals changed.

Since that date, there has been no routine Covid testing in hospitals, even for those with Covid symptoms. Image
Since 1 April, PCR tests have only been given to those where having a Covid diagnosis would change their prescribed clinical treatment plan.

Even clinically vulnerable patients eligible for anti-viral treatment are only given an LFT test.

gov.uk/guidance/covid…
Image
And yet, despite there now being no routine Covid testing for hospital admissions, we’ve still seen a rapid increase in Covid hospitalisations over the last 3 months.

It’s not just increased a bit; it’s QUADRUPLED! Image
When we look back a bit further, the data appears more reassuring as the recent hospitalisation figures are nowhere near the peaks we used to get.

But remember, prior to 1 April, every single hospital admission would be routinely tested for Covid.

It’s like comparing 🍎 & 🍐! Image
If there hadn’t been the change in testing policy, perhaps that trough in July would be at the same baseline as other recent dips?

If you extrapolate a 4x increase on top of that, the numbers start to look extremely worrying.

But, of course,without testing, we can’t be sure. 🤷🏻‍♀️ Image
Either way, this 4-fold increase in Covid positive hospital admissions, despite there being *no* routine testing, is quite something.

But what’s even *more* remarkable is that there’s not even been any noticeable increase in PCR testing volumes (grey bars on chart below).

👇🏻 Image
The thing which has shot up massively is the % of PCR tests which give a positive result.

It’s just peaked at 16.9%.

With the same number of tests but a big increase in positivity rate, that tells us we’re almost certainly missing a LOT of Covid hospital cases in those figures. Image
Rumour has it that some hospitals have even been told they’re not *allowed* to test patients for Covid.
But even without much testing, doctors on the front line are confirming that they’re definitely seeing a marked increase in Covid cases…
There’s two aspects to this story though:

1) the data and the fact that we’re not seeing the full picture here.

But more importantly:

2) the real-world impact of all those hospital patients who are infected with Covid but haven’t been tested for it.
The really tragic thing is that it’s no longer deemed necessary to test to identify Covid positive patients because there are not really any infection controls for Covid anymore.

There are no isolation wards for Covid patients.

They don’t test them. They don’t isolate them.
If you have to be admitted to hospital, it’s quite possible there will be someone on your ward with Covid.

They may not even know it themselves as there’s hardly any testing anymore…
Even if there’s not someone on your ward with Covid, maybe there is on the ward next door.

And then you’ve got doctors and nurses who are busily doing their jobs, moving from ward to ward, patient to patient, seeing dozens of sick patients a day… day in, day out…
…but those doctors and nurses who have been attending to all those sick patients won’t be wearing a face mask.

Masks are no longer required in the vast majority of hospitals.

Apparently it’s more important to see doctor’s smiles 😁 than to prevent the spread of infection. Image
It’s little wonder that Covid is spreading like wildfire through hospitals.

Part of the reason it spreads so easily is that people are highly contagious just before the onset of any symptoms.

In fact, nearly 60% of all Covid infections are from people with NO symptoms (yet).
Image
Without routine testing, these asymptomatic cases will of course go undetected.

But it’s even worse than that.

They’re not even protecting against SYMPTOMATIC transmission!

Healthcare workers who have Covid symptoms and/or test positive are told they should still come to work. Image
Surely the one place that people should be afforded a higher level of infection control is in hospitals…

…a place where people go when they are sicker, weaker and more vulnerable than they would usually be.

Isn’t that the very essence of the Hippocratic Oath? Image
Numerous studies tell us that clinical outcomes from hospital-acquired Covid infections are pretty dire, far worse than those who remained infection free.

“1 in 5 people who caught Covid in hospital, died with it.”

mirror.co.uk/news/uk-news/w…

Image
This isn’t just impacting patients, it’s impacting doctors too.

@TheBMA recently released a report outlining the devastating effect which Long Covid is having on many doctors’ lives.

It ended with a powerful quote from @fearnley_k 👇🏻

bma.org.uk/bma-media-cent…
Image
This week, the Covid Inquiry has been hearing evidence from doctors saying they didn’t feel adequately protected during the early stages of the pandemic.

But Covid is not over.

This is still happening in hospitals TODAY.

And there are even LESS mitigations now than back then.
Image
In Scotland, doctors formally wrote to the Government in July opposing the withdrawal of face-masks in healthcare.

They state that they consider this decision to be “flawed and dangerous”.

You can download a pdf copy of the letter from here:

covidactionscotland.org/2023/07/17/sco…

Image
If you’ve read this far, hopefully you understand why we need to do more to prevent the spread of Covid in hospitals.

Please help us by signing & sharing this petition to bring back #MasksInHealthcare:

✍🏻

We need to hit 10,000 signatures by 12 October! petition.parliament.uk/petitions/6363…
Image
We also need to filter the air on wards to remove viruses and other airborne pathogens…

…just like they are doing in the East Suffolk & North Essex NHS Foundation Trust.

This should be rolled out across ALL healthcare settings.
Everyone should have the right to access safe healthcare.

Hospitals must be made safe again.

Below is a Open Letter written by the distinguished team of experts at the John Snow Project which you can use to help advocate for better infection controls in your local hospital 👇🏻



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@kallmemeg Actually, I should say trends are still “reliable”, rather than “good”…

…because the trends actually don’t look too “good” at all, do they?

It’s been a while since we’ve seen hospitalisations quadruple in the space of just 3 months.
@kallmemeg By the way, I’m not sure if you saw my reply to your kind offer to take me through your data sources on another thread. 👇🏻

Please could you let me know if I’ve missed any data that allows us to estimate the current prevalence of Covid.

I’d really like to learn more.

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More from @_CatintheHat

Mar 10
In 2023, the British Council for Offices (BCO) updated the ventilation guidance for offices:

💨 The *minimum* recommended ventilation rate was increased from 12 to 14 litres of outdoor air per sec per person.

Now guess what the ventilation rate is in a typical UK classroom…❓ Image
Since 2022, the Schools Air quality Monitoring for Health & Education (SAMHE) project has monitored indoor air quality in hundreds of schools across the UK.

Shockingly, their data revealed that the ventilation rate in a typical UK classroom is just 5.3 litres per sec per person. Image
Worse still, the data shows the average ventilation rate plummets to just 3.8 litres per sec per person in colder weather.

Now compare this to the MINIMUM recommended ventilation rate for offices of 14 litres per sec per person.

Schools are achieving just a fraction of this! Image
Read 17 tweets
Feb 22
FROM THE OLYMPICS TO NASA, WEARING MASKS IS BACK - EXCEPT IN HEALTHCARE

Brilliant article on how masking is increasingly popular with Olympic athletes, actors & astronauts wanting to avoid illness…

…but sadly, in hospitals, masking is rare & those who do are often gaslit.

🧵 Image
Here’s a link to the online version of this article by the brilliant Tess Finch Lees:
independent.ie/opinion/commen…
The link above is paywalled so here’s an archived link where you can read it for free:


(Please do also click the first link as well though to increase traffic & help persuade editors to publish more Covid stories like this).archive.ph/sfP52
Read 18 tweets
Feb 20
🏴󠁧󠁢󠁳󠁣󠁴󠁿 Something unusual & concerning in Scotland’s Covid data in the last few weeks.

There’s been a sharp rise in the proportion of hospitalised Covid cases which are children.

Currently over half of all Covid hospitalisations in Scotland are kids aged 0-14 years.

(h/t @gwladwr) Image
The data also shows that, since January, Covid incidence rates for these younger age groups have been going into the ‘high’ (dark blue) and ‘very high’ (purple) classifications, particularly the 1-4 years age group. Image
I’ve also taken a look at the England data and Covid positivity rates have been rising sharply in recent weeks in the 0-14 age groups.

Definitely one to watch in the coming weeks… Image
Read 4 tweets
Jan 30
🏴󠁧󠁢󠁥󠁮󠁧󠁿PUPIL ABSENCE - AUTUMN 2025

The DfE have now published pupil absence data for the Autumn term:

🔎 Pupil illness absence across the autumn term averaged out at 3.44% (compared to pre-pandemic average of 2.5%).

🔎 By the end of Nov, illness absence had soared to 4.7%.

🧵 Image
DfE commentary:

“The increases seen in the latter weeks of term were mainly driven by illness-related absence”

“This increase in absence is equivalent to approximately 500,000 less days in school compared to the previous autumn term.”

…e-education-statistics.service.gov.uk/find-statistic…Image
To anyone paying attention, these illness absence figures should not come as a surprise.

By early December, UKHSA was warning about how flu was spreading like wildfire through classrooms, leading to very high infection rates in school-age children (pink & green lines on chart). Image
Read 10 tweets
Jan 4
COVID & CHILD DEVELOPMENT

New US study showing impact on child brain development when their mothers are infected with COVID during pregnancy.

Results show:
🔎 Structural differences in regions of the brain
🔎Lower cognition & social-emotional scores

sciencedirect.com/science/articl… x.com/harryspoelstra…Image
And here’s another study, this time from Brazil (published Jun 2025), which also shows the impact of maternal COVID infection on child development.

At 24 months:
🔎 36% of infants exhibited cognitive delays
🔎 64% communication delays
🔎 57% motor delays

nature.com/articles/s4139…Image
And another study, just published this week (Jan 2026) in ‘Obstetrics & Gynecology’, came to similar conclusions…

“Maternal SARS-CoV-2 infection in pregnancy was associated with increased risk of adverse neurodevelopmental diagnoses by age 3 years”.

journals.lww.com/greenjournal/f… x.com/jama_current/s…Image
Read 4 tweets
Dec 17, 2025
“When it comes to flu, the focus is often on droplet transmission, but there’s also evidence of aerosol transmission. That means that ventilation & air filtration are HUGELY important.

“Are the Govt looking to improve that to help deal with all the respiratory infections?”

/1
It’s absolutely brilliant to hear Baroness Bennett raising this crucial question in the House of Lords this week.

Thank you, @natalieben 🙏🏻

You can read a transcript of the full question and response received below ⬇️



/2 hansard.parliament.uk/Lords/2025-12-…Image
Given the shocking state of ventilation in UK hospitals ⬇️…

3/
Read 4 tweets

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