ONS LONG COVID DATA:

I’m still working through the raw data released yesterday by ONS revealing the prevalence of Long Covid in England & Scotland.

Some interesting (& concerning) data points are emerging so I wanted to do a quick thread on what it reveals for CHILDREN…

🧵
Image
▪️111,816 children (aged 3-17 yrs) were estimated to be suffering from Long Covid during the 4 week period ending 7 Mar 2024 (England & Scotland).

▪️Over 20,000 of these kids with Long Covid reported that their ability to undertake day-to-day activities had been limited A LOT. Image
Worryingly, the data suggests that the number of children with Long Covid is steadily increasing with each passing month…

…from 84k in December 2023 to over 111k in March 2024!

It’s risen by A THIRD in just 3 months. Image
Frustratingly, the data on duration of Long Covid symptoms is not broken down by age within the raw data, so we only have an overall aggregated view across all ages… Image
One thing jumps out at me from this chart is:

➡️ 30% of people with Long Covid have been suffering for LESS than a year.

In other words, these are NEW cases that have arisen since the last ONS Long Covid report in March 2023. Image
In fact, prevalence of Long Covid in children is now significantly higher than a year ago, in March 2023, when it was last reported.

At that time, 62,000 children were suffering from Long Covid…

… and that was UK-wide data whereas today’s new figures are for 🏴󠁧󠁢󠁥󠁮󠁧󠁿 & 🏴󠁧󠁢󠁳󠁣󠁴󠁿 only.
Image
Prevalence of Long Covid in children is lower than for adults (in some adult age groups, prevalence is up to 5x higher!)…

…but a small percentage of a big number is still a BIG number.

However you look at it, over 111k children with Long Covid is a horrifically large number. Image
Unless you’ve experienced it yourself, it’s hard to comprehend the devastating impact Long Covid can have on young people.

Please spare a few minutes to watch this ITV News report which illustrates what it’s like for Long Covid kids & their families.

The report above was the first in a series of Special Reports by @StaceyPooleITV.

They are hard to watch, but extremely informative.

You can find them all in the playlist below:

youtube.com/playlist?list=…
Image
The really scary thing is that Long Covid can affect any child, even after a mild initial infection… it’s totally random.

And with no mitigations whatsoever in schools, children keep getting infected over & over again… sometimes multiple times a year.

fortune.com/2023/01/05/ori…
Image
Previous ONS studies have shown that children are JUST AS LIKELY to develop Long Covid after their 2nd infection as those infected for the 1st time.

Just because they’ve had Covid once & were fine, it doesn’t mean they’ll be fine the next time…

ons.gov.uk/peoplepopulati…
Image
Long Covid does not have one specific set of symptoms.

It can affect any organ in your child’s body.

There are now hundreds of studies about Covid’s serious long-term effects on the lungs, heart, brain, kidneys, immune system… the list goes on & on.

publications.aap.org/pediatrics/art…
Image
The aspect I’m most concerned about is the long-term damage which Covid can cause to the brain.

We now know that Covid infection can lead to a plethora of new neurological symptoms, including confusion, difficulty concentrating, memory problems, depression & anxiety.
“We fundamentally do not know the extent of the long-term damage continual reinfection with COVID will cause to children.

In spite of all the evidence for caution, we are now tossing children into a world with nearly zero protections.”

calgaryherald.com/opinion/column…
Image
Another useful insight from the ONS data is prevalence of various symptoms amongst children who tested positive.

The most common symptoms for those with Covid were:
▪️runny nose: 82%
▪️cough: 71%

Fever was far less common, reported in just 25% of children who tested positive. Image
And yet, the government’s latest attendance drive actively encourages parents to send sick children to school, unless they have a fever.

But, as the ONS data clearly shows, around 75% of children who are infectious with Covid will NOT have a fever! Image
And, of course, parents are told NOT to test their kids for Covid, so they’ll just send them to school with their Covid symptoms so they can merrily infect all their classmates.

I don’t blame the parents though - this is the official government guidance!

educationhub.blog.gov.uk/2023/10/11/wha…
Image
This government guidance is so irresponsible and, frankly, dangerous.

What if there’s a clinically vulnerable child (like my son) in the class?

A runny nose for one kid may mean a lengthy hospital stay for another kid. Image
It’s little wonder so many parents are furious about this ‘insulting’ and ‘dangerous’ attendance campaign which encourages parents to send sick children to school, as covered here in iNews by @AasmaDay.

inews.co.uk/news/education…
Image
And then there’s the fact that the Covid infections themselves can create lasting differences in some people's immune systems which leaves them more susceptible to other diseases like RSV.

This may well be part of the reason we’re seeing a rapid rise in so many other illnesses.
Image
It’s little wonder that pupil absences due to illness remain so stubbornly high!

Since the start of this academic year:

▪️overall absence: 7%
(vs 4.9% in pre-pandemic 2018/19)

▪️illness absence: 3.7%
(vs 2.5% in 2018/19)

➡️ 53% of all absences are due to ILLNESS! Image
And no, this is absolutely NOT normal.

Pre-pandemic, the average illness absence rate was about 2.5%.

Across the 2022/23 academic year, the illness absence rate was 3.7%.

That’s nearly 50% higher than pre-pandemic!

…and so far this academic year, it’s STILL at 3.7%. Image
If the government is serious about wanting to address the school attendance crisis, then they need to be looking at ways to reduce the spread of illness in schools.

And that means telling sick kids to stay home and also improving VENTILATION & AIR FILTRATION in classrooms.

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More from @_CatintheHat

Oct 26
“We're not just running out of cubicles; we're running out of corridors.”

“It feels like [Winter] is going to be armageddon, to be honest. We’re already full.”

This entire article is frankly horrifying. And yet, nothing is being done to mitigate it.

independent.co.uk/news/health/nh…Image
Analysis of NHS data by the RCEM, shows that from Jun-Sep 2025, over HALF A MILLION patients had an A&E stay of over 12 hours from their time of arrival in England.

This is MORE than the entire winter of 2021-22, during which the UK experienced one of the worst Covid waves. Image
In the latest weekly figures, there were 188 people Covid deaths across the UK.

188 Covid deaths. In just one week.

3,866 Covid deaths so far this year.

(H/t @gwladwr) Image
Read 7 tweets
Oct 20
COVID INQUIRY

Prof Whitty on VENTILATION in schools:

“It's an uncontroversial statement from an epidemiological point of view to say that improving ventilation in schools would be a good thing […] The advantages of ventilation are very substantial.”

So why aren’t we doing it?
Data from the national schools air quality monitoring project (SAMHE) shows that ventilation rates in schools drop to just 3.8 litres per sec per person in colder weather.

This is far BELOW the minimum UK guidance of 5-8 litres per sec per person.

When will the govt fix this? Image
For more clips from Prof Chris Whitty’s appearance at the Covid Inquiry today, please take a look at this excellent thread from Clinically Vulnerable Families (@cv_cev):
Read 4 tweets
Oct 17
LONDON MAYOR INVESTS £2.7M IN AIR QUALITY FILTERS FOR SCHOOLS

I’m SO excited about this! I hope there’s lots of press coverage about it over the coming weeks.

It’s not just an issue in London though.

ALL children have the right to breathe clean air.

london.gov.uk/mayor-invests-… x.com/_catinthehat/s…Image
Here are some more details about the project:

▪️At least 200 schools across London will receive HEPA air filters

▪️Filters used for this initiative will be Blast & Blast Mini devices from @SmartairUk

▪️Participating schools will receive one filter per classroom where possible
@SmartairUk I’m particularly pleased to see that the @MayorofLondon has chosen SmartAir air filters for this initiative.

I’ve done a lot of research on air filters & the Blast & BlastMini are two of the very best air filters for schools.

High CADR & low noise make them the perfect choice! x.com/_catinthehat/s…Image
Read 21 tweets
Oct 13
Why do schools need to tackle poor VENTILATION in classrooms?

Because nationwide monitoring of UK classrooms shows that ventilation drops to appallingly low levels when outdoor temperatures drop & windows are closed.

Poor ventilation means airborne viruses spread like wildfire. Image
And when those airborne viruses spread like wildfire, guess what happens to pupil & teacher absence rates?

Unsurprisingly, they sky rocket! 🚀

Here’s what happened to absence rates in the 2023/24 & 2024/25 autumn terms (vs the pre-pandemic average shown by the dotted line) ⬇️ Image
Now look what’s happening to illness in 15-24 year olds right now… 👀

Covid rates have been steadily rising and are now at the highest point in over a year for this age-group.

Meanwhile, flu has seen a dramatic rise about a month earlier than usual.

(Chart from @1goodtern) Image
Read 6 tweets
Oct 13
The DfE have published guidance on reducing the spread of illness this Winter.

Much of it focusses on things like handwashing & catching sneezes which WON’T stop airborne illnesses spreading.

BUT I’m pleased to see a whole section on VENTILATION, CO2 MONITORING & AIR FILTERS. Image
Link to this newly published guidance can be found here:

educationhub.blog.gov.uk/2025/10/reduci…
The joint unions have also just released newly updated guidance:

“GOOD VENTILATION IN SCHOOLS & COLLEGES AND HOW TO ACHIEVE IT!”

This excellent guide sets out 5 simple steps which schools should be taking to monitor & improve ventilation in classrooms.

neu.org.uk/sites/default/… x.com/neunion/status…Image
Read 6 tweets
May 22
“LONG COVID IS FUELLING A MENTAL HEALTH CRISIS IN CHILDREN”

🚨Nearly 40% of children with Long COVID reported anxiety or depression; half had no prior diagnosis.

🚨Mental health impact was comparable to that of serious chronic illnesses like cancer.

neurosciencenews.com/long-covid-chi…Image
Meanwhile, more than 500 children a day in England are being referred to NHS mental health services for anxiety, more than DOUBLE the pre-pandemic rate…

…and yet, the impact of repeated COVID infections on children is never even considered as a contributing factor. Image
There are so many studies about the detrimental impact that Covid has on the brain…

…how the brain inflammation can trigger neurological symptoms such as depression & anxiety.

I don’t understand why this is just being ignored by the mainstream media.

health.harvard.edu/mind-and-mood/…Image
Read 4 tweets

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