John Burn-Murdoch Profile picture
Jan 20, 2022 12 tweets 5 min read Read on X
The steepness of Omicron’s rise and fall in South Africa really is something to behold.

Here’s Gauteng first, where it all began.

Cases, test positivity, admissions, deaths and excess deaths too all down almost as steeply as they rose, and in much less time than past waves.
We’ve all got used to comparing the height of "new daily x" charts over the last couple of years, but at the end of the day it’s not just wave height but also wave duration that determines the ultimate toll on public health, so it’s worth looking at each wave cumulatively...
And here we are:

*Daily* cases peaked close to Delta, but shorter wave means total cases much lower

With more acute outcomes it’s striking:
• Less than 40% as many hospitalisations
• 10% as many deaths, and excess deaths lower still

These numbers will rise, but not by much
Here are the same charts for the country as a whole.

Remarkably symmetrical meteoric rise and fall in cases and test positivity, with admissions, deaths and excess deaths also now all falling.
The cumulative numbers for Omicron will all keep climbing for some time yet, especially deaths, but it’s already very clear that the Omicron wave will end up being South Africa’s least lethal, possibly by a large margin.
It’s also clear that infections have passed the peak in all English regions, not just based on case numbers but also the ONS’s gold-standard random sample infection survey
Scotland, Wales and Northern Ireland too show declines in both source datasets, though the two series don’t track one-another quite as neatly outside of England.
And that’s backed up in the data from hospitals, where admissions are now falling in every UK nation and region
But... while early UK data mirrors South Africa, it may not necessarily stay that way.

Today’s English data show the rate of decline in cases has slowed, virtually to a standstill:
• Cases rising in children
• No longer falling in 35-59s (their parents’ cohort)
That pattern is what we expected, as schools drive transmission among children, and that spreads to their parents.

Question is whether this is a temporary blip in a downward trajectory, or whether it sends us back to a bona-fide second peak.

Our story: ft.com/content/8d6bdc…
One more note from England:

I’ve seen suggestions the recent rise in Covid deaths may be due to ‘incidentals’ where someone tested positive but died for other reasons.

Nope: reported Covid deaths in London still track the ONS cause-of-death series. Good news is, rise is slowing
(that last one possibly of interest to fellow nerds @PaulMainwood @JamesWard73 and of course the actuaries @ActuaryByDay @john_actuary)

ONS series is adjusted upwards in accordance with historical upward revisions for the same week last year.

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More from @jburnmurdoch

Apr 11
NEW 🧵

The number of people travelling from Europe to the US in recent weeks has plummeted by as much as 35%, as travellers have cancelled plans in response to Trump’s policies and rhetoric, and horror stories from the border. Image
Denmark saw one of the steepest declines, in an indication that anger over Trump’s hostility towards Greenland may be contributing to the steep drop-off in visitor numbers. Image
Corporate quotes are usually pretty dry, but the co-founder of major travel website Kayak wasn’t mincing his words: Image
Read 5 tweets
Apr 4
NEW 🧵

A quick thread of charts showing how Trump’s economic agenda is going so far:

1) Trump has had the same impact on economic uncertainty as a global pandemic. Image
2) That was just the US version.

What’s particularly impressive is that he’s managed this on a global scale.

Starting to get the feeling that “Trump” annotation is going to be the chart equivalent of a layer of volcanic ash in the fossil record. Image
3) US consumers are reacting very very negatively.

These are the worst ratings for any US government’s economic policy since records began. Image
Read 11 tweets
Mar 14
NEW 🧵: Is human intelligence starting to decline?

Recent results from major international tests show that the average person’s capacity to process information, use reasoning and solve novel problems has been falling since around the mid 2010s.

What should we make of this? Image
Nobody would argue that the fundamental biology of the human brain has changed in that time span. People’s underlying intellectual capacity is surely undimmed.

But there is growing evidence that the extent to which people can practically apply that capacity has been diminishing.
For such an important topic, there’s remarkably little long-term data on attention spans, focus etc.

But one source that has consistently tracked this is the Monitoring The Future survey, which finds a steep rise in the % of people struggling to concentrate or learn new things. Image
Read 15 tweets
Mar 7
NEW: The actions of Trump and Vance in recent weeks highlight something under-appreciated.

The American right is now ideologically closer to countries like Russia, Turkey and in some senses China, than to the rest of the west (even the conservative west). Image
In the 2000s, US Republicans thought about the world in similar ways to Britons, Europeans, Canadians.

This made for productive relationships regardless of who was in the White House.

The moderating layers around Trump #1 masked the divergence, but with Trump #2 it’s glaring. Image
In seven weeks Trump’s America has shattered decades-long western norms and blindsided other western leaders with abrupt policy changes.

This is because many of the values of Trump’s America are not the values of western liberal democracies.

My column: ft.com/content/304601…
Read 5 tweets
Feb 24
NEW: updated long-run gap in voting between young men and women in Germany:

The gender gap continues to widen, but contrary to what is often assumed, young men continue to vote roughly in line with the overall population, while young women have swung very sharply left. Image
Here’s my original analysis from last year: ft.com/content/29fd9b…
The key stats:

Young men’s AfD vote is somewhat higher than the national average (25% vs 21%), but their leftwing vote is also above average (15 vs 9).

Whereas young women’s AfD vote is significantly lower than average (14 vs 21), and leftwing vote far higher (34 vs 9).
Read 4 tweets
Nov 8, 2024
My wish for the next election is that poll trackers look like the one on the right 👉 not the left

This was yet another election where the polling showed it could easily go either way, but most of the charts just showed two nice clean lines, one leading and one trailing. Bad! Image
Pollsters and poll aggregators have gone to great lengths to emphasise the amount of uncertainty in the polls in recent weeks...

But have generally still put out charts and polling toplines that encourage people to ignore the uncertainty and focus on who’s one point ahead. Bad!
The thing about human psychology is, once you give people a nice clean number, it doesn’t matter how many times you say "but there’s an error margin of +/- x points, anything is possible".

People are going to anchor on that central number. We shouldn’t enable this behaviour!
Read 11 tweets

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