Compared to wave 1, the acuity was lower - less unwell on admission, and less respiratory support
There were more admissions, likely representing a higher case count and lower threshold for admission
2/
Children with no comorbidity made up 60% of admissions, and of these >40% were <1yo, likely representing our lower threshold to admit infants
Indeed, children w/o comorbidities were less unwell and required much less support
3/
Amazingly, 1 in 5 cases were incidental - likely a gross underestimate
Many sites will not report these (e.g. orthopods unlikely to submit a report if child has a broken leg)
The true rate will be much higher
Suggesting "80% admissions are for, not with COVID" is false
4/
Reassuringly only 16% of admissions required intensive care, and deaths were extremely rare even for admitted cases (0.8%)
Risk factors for ICU include older or younger age, South Asian ethnicity, higher PEWS on admission, and more comorbidities
5/
Overall, more reassuring data that:
- Alpha no more severe for children
- High rates of incidental positive tests on admission
- Children w/o comorbidities are extremely low risk
- Risk of ICU admission or death extremely low
6/
There's tonnes more to dig into in this rich data set and in the supplement too
An incredible effort led by the amazing @livvyswann to get this data out there - she deserves a medal 🏅
It was a privilege to play a small part of it, massive thanks to everyone on the team!
7/
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Loads of people will now have heard of RSV for the first time
Here is a quick thread on the disease it causes (bronchiolitis) and why we DONT use salbutamol inhalers/nebulisers to treat it - they can even make it worse!
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Bronchiolitis does what is says on the tin
It’s infection with a virus (usually RSV, but can be others) affecting the small airways (“bronchioles”) causing inflammation (“itis”)
It causes wheezing, coughing, and difficulty breathing
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Usually it affects babies <1y of age (although in the US definitions are a bit different…) and is seasonal, coming in waves every winter
It is the most common cause of hospitalisation of children, usually for breathing support, extra oxygen, or help feeding
3/
I've seen some completely incorrect comments about the current situation with kids cases and hospitalisations in England, so let's clear up where we're at!
1. Cases in children started falling well before schools closed for summer
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Cases acquired in the last week of school would not become symptomatic and get tested until the following week
Any changes in trends due to schools closing should show up the week AFTER schools closed, not the week before (obviously)
2/
2. Cases are not falling in children due to summer holidays
Cases are actually relatively flat (or rising) in most age groups, although there was a small uplift in young adults before others
Possibly a new rise coming in older teens secondary to a large surfing festival 🏄