there's probably a meme for this:
and to put it in context, here are the other age groups: (first 0-30s)
and 30-60s
and 60-90s
so it does look like the rate at which growth is falling is itself falling (is that a positive third derivative? - I'm losing track). and particularly in the young-adult groups (15-35) we may have settled to a new rate - or could even be starting to bounce back to higher growth
and if you're tempted to blame this on the football... I think you're probably right (at least in part). the timing fits with last weekend's match, and the growth is biased to males over the last week, in nearly every age group.
in a way that's good news: the number of football matches is not increasing exponentially, and so while we might see a "bump" in cases from this, it should fade over the following weeks. 🤞
and in case you're wondering: no my model didn't assume that growth would continue to fall at its previous rate (but it did assume a continued, gentler, fall - so if growth did start growing again that would be an issue)

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More from @JamesWard73

12 Jul
I feel the need to clarify my argument against delaying Step 4, because I think the nuance may be getting lost. For me at least, it’s not a case of “let’s have lots of infections now because it will make things better in the winter, and the net effect will be positive”.
To say that would imply much greater confidence about how the epidemic will evolve over the next several months than I actually have. Rather, it’s more the reverse: “I’m not confident that delay (of Step 4 to September) will make things better, overall”
I can readily construct scenarios where delay *does* make things better, via the right combination of extra vaccination, combined with slow/gradual removal of residual controls. The summer is slightly improved, and there is no large winter/spring wave, so the net effect is good.
Read 18 tweets
10 Jul
So it’s time for me to come off the fence re 19th July. I’m in favour of:
a) Opening up on 19/7, but with stronger mitigating baseline measures than the govt is proposing
b) Opening up vaccinations to 12-17s as supply permits, starting with the vulnerable.
Long🧵follows...
I’m very conscious that many people will disagree with something I’ve said there, and possibly all of it. And I have good friends on all sides of these debates, who I don’t want to lose. So it may help to say: just because you oppose (or support) vaccination of teenagers…
…doesn’t mean that I think you’re a psychopath. And just because you might support extending regulations for another few weeks, doesn’t mean I think you’re a “bedwetter”, or uncaring about those who have suffered during lockdown. So I’d be grateful if you…
Read 45 tweets
9 Jul
so close...
and if you prefer to look at the case data instead of growth rates, here it is:
and if you just prefer numbers, here are two to consider:
- England cases in 20-24 age group, specimen date 28th June: 4510
- same figure 7 days later, on 5th July: 4548
(and yes, I know there could still be some late tests reported for that date tomorrow or thereafter)
Read 4 tweets
8 Jul
As usual, Monday’s modelling thread produced some excellent questions, and apologies that I wasn’t able to answer all of them. But as a small corrective, I’d like to offer answers now to four of the most common / relevant questions, in a short thread:
Q1: what happens if you vaccinate teenagers? As it happens I did look at this, but ran out of time & space to give you the results on Monday. The short answer is that it doesn’t make much difference to the model results, because I’m assuming that...
…(as per @PaulMainwood analysis) we don’t have enough mRNA supply to vaccinate more than a small % of teenagers before September, and by then the summer wave is mostly over. The one exception is in the scenario (below) where we delay opening…
Read 11 tweets
8 Jul
This is my new favourite graph of the week: case growth rates down (or roughly flat) over the last week in nearly every age group. There’s just one fly in the ointment: rising growth in the 90+, which is not the group I would choose for that pattern.
Here’s the more familiar graphs by age group, starting with the 0-30s:
then the 30-60s:
Read 9 tweets
7 Jul
There’s plenty of bad news on the dashboard this evening, with hospitalisations and deaths joining cases in growing by over 40% week-on-week. But is it just me, or does that case curve look like it’s starting to curve over to the right?
Of course, this will be no surprise to anyone who’s been paying attention to the age-stratified growth rates over the last week. And the pattern here continues, with growth rates continuing to fall in the under-30s:
and in the 30-60s:
Read 7 tweets

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