This is Shadow Education Secretary @bphillipsonMP talking about the importance of VENTILATION in schools & how the Government’s approach is “incompetent, complacent & inadequate.”

What I’d like to know is:

What will SHE do differently if LABOUR win the election?

/1
This is an EPIC thread, written by Shadow Education Secretary @bphillipsonMP on the importance of VENTILATION in schools.

She compiles all the evidence & berates the Tory Government for their despicable inaction.

But what will SHE do differently if LABOUR win the election?

/2
This is Shadow Education Secretary @bphillipsonMP revealing how she spoke to teachers EVERY DAY who told her the problem the government needs to solve is VENTILATION.

Nothing was ever done & it’s STILL a huge problem.

What will SHE do differently if LABOUR win the election?

/3
Image
There are many more tweets like this.

@bphillipsonMP KNOWS the problem.

She has repeatedly criticised the current government for inaction.

Soon it may be her turn.

What will SHE do differently if LABOUR win the election?

Is our children’s health a priority for her?

/4
Image
Bridget Phillipson has said Labour would not just have done things differently in the past…

…that they’d be doing things differently NOW.

Well, this is your chance to prove it, @bphillipsonMP.

What will YOU do differently in terms of improving VENTILATION in schools?

/5
Image
Shadow Education Secretary @bphillipsonMP has also stated that pupil attendance is a key focus for Labour.

The great thing about improving VENTILATION & AIR FILTRATION is that it can hugely reduce pupil absences due to illness, as pointed out in many replies to this tweet ⬇️

/6
Image
There’s a mountain of evidence that improving ventilation & air filtration can hugely reduce the spread of airborne illnesses:

▪️A study conducted in Cambridge showed that air filters removed almost all trace of SARS-CoV-2 from the air.



/7 cam.ac.uk/research/news/…
▪️A Swiss study demonstrated that HEPA air filters delivering a clean air delivery rate of 5 air changes per hour (800m3/h) in a typical classroom led to a 5-fold decrease in the cumulative viral dose absorbed by exposed occupants.



/8 smw.ch/index.php/smw/…
Image
▪️A study conducted in Bradford showed that Covid-related illness absence in schools was reduced by >20% when HEPA air filters were used in classrooms.



/9 newscientist.com/article/239871…
Image
▪️An Italian study showed that ventilation delivering 6 air changes per hour could reduce transmission of Covid by a whopping 82%.



/10reuters.com/world/europe/i…
If you’d like to read more research, here’s a link to a compilation of 58 research studies from around the world which all demonstrate the effectiveness of air filters at removing Covid from the air in different settings:



H/t @CarlvKeirsbilck

/11 medium.com/@carlvank/luch…
1.3 MILLION more pupils are now missing at least 5% of sessions compared to pre-pandemic…

…and the key driver is because pupil absences DUE TO ILLNESS are 50% higher than pre-pandemic.

We need to start CLEANING THE AIR!

But will @bphillipsonMP make it a Labour priority?

/12
Image
Reducing the spread of illness MATTERS.

With each new wave of Covid, more children are ending up suffering from the debilitating impacts of Long Covid.

These isn’t a problem from the past. This is happening NOW.

The number of kids affected has DOUBLED in the last year.

/13
Image
‘Covid’ may have become a taboo word, but we need to face up to the inconvenient truth that it’s making our kids sick… a LOT.

‘Living with Covid’ shouldn’t mean just ignoring it.

It should mean making environments as safe as possible to reduce the risk of infection.

/14
…and it’s not just COVID, we’re also seeing record numbers of many other childhood illnesses, like whooping cough & measles.

The great thing about VENTILATION & AIR FILTRATION is that it doesn’t just work for Covid, it helps reduce transmission of ALL airborne illnesses.

/15
Image
Clean air in schools is not a restrictive mitigation; it’s an ENABLING mitigation.

It would allow our children to attend school with less risk, less illness, less absence.

And for clinically vulnerable children, it could’ be a life-saver.

There’s no downside to clean air.

/16
Image
If you’re not convinced about cleaning the air to reduce the spread of illness in schools, here’s another reason to factor in:

▪️“Almost all children in the UK are exposed to harmful levels of toxic air pollution.”



/17 express.co.uk/news/nature/15…
Image
A new study led by Evelina London Children’s Hospital & King’s College London found that:

▪️EVERY planned new school was located in an area which exceeded AT LEAST ONE of the WHO air quality targets.

▪️86% of locations exceeded all 3 WHO targets.



/18 amp.theguardian.com/society/2024/m…
Image
You can find a copy of the study into air quality surrounding planned new schools in England at the link below ⬇️



It makes for sobering reading.

THIS is why we need air filters in schools & cannot rely on ventilation alone.

/19 adc.bmj.com/content/archdi…
Image
There’s also another reason why we cannot rely solely on natural ventilation (open windows)…

As Bridget Phillipson has pointed out in the past, it’s simply not practical to just say “open the window” when it’s freezing cold outside.

It simply doesn’t happen…

/20
Image
This is clearly shown by the latest data from the UK Schools Air quality Monitoring project (SAMHE):

▪️Even when looking at daily averages which hide the peaks, the average daily CO2 levels for well over 25% of classrooms EXCEEDED 1,500ppm when the weather was cold.

/21
Image
Of course, these issues don’t only affect pupils; they affect TEACHERS too.

A Nuffield trust report was recently published to highlight the shocking rise in sickness absences within the NHS…

…but inadvertently showed that it’s EVEN WORSE for teachers!

nuffieldtrust.org.uk/resource/all-i…
Image
More than 3.2 MILLION working days were missed by teachers PURELY DUE TO ILLNESS in 2021/22, compared with 2 million working days missed in pre-pandemic 2018/19.

That’s a 56% increase!

(Data for teacher absences in 2022/23 has not been published yet).

schoolsweek.co.uk/teacher-sickne…
Image
All this illness comes at a BIG cost…

£622 MILLION was spent on supply teacher cover in 2021/22, up more than a third year-on-year.

That’s £171 per pupil!

Schools have been sounding the alarm over these ‘unprecedented’ soaring supply cover costs.

schoolsweek.co.uk/school-supply-…
Image
If you thought £171 spend per pupil on supply teachers was high, I’m sorry to report that supply costs increased FURTHER in 2022/23…

The total spend on supply teachers in England rose to £196 PER PUPIL in 2022/23.

That’s a total spend of £698 MILLION!

…e-education-statistics.service.gov.uk/data-tables/pe…
Image
Now imagine how much money could be saved if schools could reduce teacher absences due to illness…

If supply teacher costs could be brought back down to pre-pandemic levels, that’s a potential saving of ~£36 PER PUPIL.

For each class of 30 kids, that’s a saving of over £1,000! Image
So when people say schools can’t afford air filters, my question is: can they afford not to?

By reducing the spread of illness, the air filters will pay for themselves!

My top pick for schools would be the Blast Mini. It delivers 740m3/h of clean air, is v quiet & costs <£400.
Image
Now it’s over to @bphillipsonMP.

In the past, she’s pointed out how scientists have recommended - and Labour has demanded - action on ventilation in schools.

If Labour win the election, will she also sit on her hands, dither & delay?

I truly hope she’s better than that.

/END
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More from @_CatintheHat

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
Dec 11, 2025
This feels like an important breakthrough moment…

On the BBC News this evening, Medical Editor @BBCFergusWalsh clearly stated:

“As for facemasks, simple surgical masks are *not* good at stopping viruses. You really need a properly fitted tight respirator mask for that”…

/1
…which begs the question, why does the NHS infection control guidance STILL only recommend surgical masks for treating patients with airborne viruses like flu & Covid… and not proper FFP3 masks?

Even Baroness Hallett was rather perplexed by this during the Covid Inquiry.

/2
The IPC experts (Dr Warne & Dr Shin) who provided independent specialist advice to the Covid Inquiry both stated that IPC guidelines should be updated to recommend routine use of FFP3 masks when caring for patients with ANY respiratory virus.

So why has this not been done?

/3
Read 7 tweets
Dec 10, 2025
CEO, NHS Providers, @danielelkeles:

“It’s a v nasty variant of flu that we have this year.”

“We need to get back into the habit that, if you’re coughing & sneezing […] then you must wear a mask when you’re in public spaces.”

I’m so pleased to hear Daniel promoting masks BUT…
…I have 3 questions for @danielelkeles:

1️⃣ He only mentions that people who are sick “must wear a mask in public spaces”…

…but why did he not also suggest that people who are *not* sick should wear a mask to prevent themselves getting sick in the first place?!

Like this ⬇️ Image
2️⃣ Why didn’t @danielelkeles mention FFP masks?

Surgical masks DON’T protect against airborne transmission of flu.

“Live viruses could be detected in the air behind ALL surgical masks tested. By contrast, properly fitted respirators could provide at least a 100-fold reduction.” Image
Read 5 tweets
Dec 8, 2025
UK ‘SUPERFLU’ OUTBREAK

Schools in England & Wales have been forced to close amid escalating flu outbreaks with hundreds of pupils off sick at a time.

Simon Kidwell, headteacher of Hartford Manor Primary told BBC Breakfast: “The winter bugs spread really easily in schools”…

/1
Headteacher Simon Kidwell is not wrong.

Children are crammed into poorly ventilated classrooms, shoulder-to-shoulder with up to 29 other kids, for around 6 hours a day, 5 days a week.

It’s the perfect environment for airborne diseases to spread…

/2 Image
We had a big wave of Covid in Sept/Oct, followed in very quick succession by the current wave of flu and RSV.

It’s been one perpetual cycle of illness hammering schools.

I often hear people say: “oh, but it’s always been like this”.

But it *hasn’t* always been like this.

/3 Image
Read 18 tweets

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