I wrote this with @adsquires because next term is coming quickly and we need to plan for how to *minimise* infection in kids & teachers and *minimise* disruption to education.
Govt still not doing anything - so this thread summarises what I am afraid will happen:
We've recorded over *1.2 million* infections in 5-14 yr olds in England since 1 Sept 2021. The real number will be much higher.
Over 2,500 6-17 year olds have been admitted to hospital with Covid since then too and ten 5-14 yr olds have died due to Covid. 2/9
Thousands more children are reporting long covid through ONS infection survey.
V big disruption to education, with 1000s of children missing school every day & teachers off sick.
Hardly any under 12s & *fewer than half* of 12-15 yr olds have received a single vaccine dose. 3/9
Many argued high infection was good - that children then have "natural immunity". Bollocks. Omicron can very easily infect those who've been infected before - esp if not vaccinated.
Term finished in Dec with Delta still dominant in schools. Next term, it will be different. 4/9
Children will go back to school with Covid in the community more prevalent than at *any time* in the pandemic. It will be almost all Omicron.
There are no new protections in schools and nowhere near enough vaccination.
We *will* see another large school wave in children 5/9
And by Feb, most teachers and parents will be 10+ weeks or so out from their boosters and we'll see more infections again in the parents of children just as we did in October this year.
It could then feed through to their grandparents and the wider community. 6/9
To minimise disruption to education, I fear govt will be tempted to remove requirement for positive kids to isolate instead of tackling the core problem of high infections.
Even more people will then get Covid - a genuine "let it rip" policy - esp for children. 7/9
Hospital admissions of children - particularly under 5s - with Covid already at record levels.
Our inaction is putting kids and their education at risk.
It puts their families & school staff at risk.
It will prolong our Omicron wave.
It's a really stupid thing to do. 8/9
There are things we could do reduce the risk - but we've left it very late. One of the biggest (giving parents option to vax 5-12 yrs) won't happen for far too long.
Vent & HEPA filters take time but we could start RIGHT NOW.
TLDR: things are pretty bad and I'm sad & bewildered at lack of govt action and general levels of hopium. 1/18
First off cases... reported levels in England now more than twice as high as previous peak last January and more than three times higher than at start of December.
Positivity rates are also rising v steeply - testing is not keeping up with cases.
All regions rising fast, London highest and earliest. Do not take London small case drop too seriously - drop in pre xmas tests & positivity still rising. Plus xmas likely to boost again. 3/18
Was going to do a quick pre-xmas thread on where we are but SAGE minutes from their meeting yesterday covers all my points!
So here is a whistestop tour of the main bits
Omicron Growth might be slowing, but only from ~2 day doubling to ~3 day doubling. So still growing fast.
Not clear why growth is slowing: likely combo of more cautious behaviours, Plan B (e.g. work from home), moving to different age groups, more reluctance to test
Number of people in hospital with Omicron doubling every 4 to 5 days – this is rapid and so far they are younger. Also increases in transmission within hospitals. SAGE expects large increase in admissions as older people get infected over Christmas ☹
THREAD on cases, hospital admissions and why so many scientists & NHS leaders are worried.
Case study of London - and what is behind the alarm!
1/10
The key bit is that it takes about 10-14 days from infection to needing hospital. And if you have symptoms, you'll probably test positive 4-7 days into infection.
So there's roughly a week from testing positive to becoming a hospital admission. 2/10
So - cases in London have risen *very steeply* - but *mainly* in the last week. And only in the most recent week has Omicron been dominant.
But cases to 19 Dec (incomplete!) are already more than double previous week. 3/10
Short THREAD on log scales and why I tend not to use them.
I've been criticised at times for not plotting case numbers etc on a log scale. I want to explain why.
TLDR: essentially it's because the burden of covid ill health and on NHS is people not log people. 1/8
When you've got exponential growth (e.g. in new covid cases or hospital admissions, it will be a straight line if you put the vertical axis on a "log scale" (normally equally spaced powers of 10).
Charts show same exponential growth on a normal scale and a log scale. 2/8
Log scales are really useful for e.g:
a) seeing if growth is exponential (straight line?)
b) looking for acceleration or slow down in growth
c) comparing growth between countries at different stages of epidemic 3/8
THREAD: on omicron, UK cases, London & what to do next...
Last post-briefing tweet thread of the year! 1/18
First Omicron... as of 11 December, Omicron was most common in Scotland and England but starting its growth in Wales & N Ireland. With its growth speed, shares of cases will now be much higher in all regions. 2/18
In England, UKHSA "S gene dropout" data shows it was 40% of cases by 13 DEcember. It will be dominant in England by now.
WHO first designated it a variant of concern & named it Omicron 3 weeks ago today. Crazy. 3/18
SHORT THREAD: Some basic musings about hospital admissions and exponential growth.
88K cases reported today - let's assume just under half are Omicron - so ~40K. Delta hospital admissions have been running at about 1.7% of reported cases in last month. 1/5
Let's assume Omicron was half as likely to cause hospital admission as Delta. So 0.8% of reported cases end up in hospital. From 40K cases today that would result 340 admissions.
just FOUR doublings takes you to 5,440 admissions - far higher than last January peak. 2/5
The 40K cases today represent people infected about a week ago. Omicron has been doubling every 2 days. Even if that's slowed this week to 3 days, that's likely 2 more doubling baked into admissions. That means that FROM NOW we there'd be two more doublings exceeding jan peak 3/5