Dr Dan Goyal Profile picture
Jan 28 8 tweets 2 min read
@profnfenton
I recently watched your explanatory video about Covid and the various problems with the data.
I think I followed your logic, but my concern relates to a few “big leaps” and the attempt to understand an illness I presume you have not seen very much of…
..if I can…
I appreciate the vulnerabilities in the data you have identified are genuine, but

1. Asymptomatic and non-infected are very different. The students were non-infected. Therefore the pick up rate of 36 false positives in the many thousands of samplings were well within <0.1%
2. The more likely reason for the initial spike in the data at the start of the vaccination roll-out is (IMV) more likely related to the genuine increased mortality associated with the overwhelmed hospitals. Excess home deaths have remained high throughout. And we see a…
A big spike in all-cause excess mortality in Nov 20 to Feb 21 due to the shutdown of other services…
You can see the rise in excess deaths preceded the vaccine roll-out and continued for a couple of months. Image
3. The reduction in Triage calls were not just 999 calls, I believe, but 111 calls and online triaged too. There was a considerable spike in 999 calls at the start of the pandemic due to understandable reasons. Firstly, people presented shamefully late in the first wave..
…around 11-13 days. In part this was the stay home messaging and in part fear. But typically patients at that point are very severe and require an ambulance. Plenty of evidence to support this…time to intubation for majority of patients was < 1 day, and inpatient mortality was
30%. The cohort was much more severe. Over time, patients were presenting earlier and in less severity and many did not warrant an ambulance.
Clear spikes in each wave and post-freedom day. Time to presentation fell to now around day5-6. You can see Delta wave and freedom day Image
I do appreciate the statistical rabbit holes, but had you worked with Covid patients you would have seen this new disease and understood the massive effect of vaccines on severity and that the volume was real!

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More from @danielgoyal

Jan 29
New Zealand have spent the majority of the last two years under less restrictions than the UK currently has in place (yes including freedom day!). Image
And here is Japan (for those arguing size, density, travel hub, etc…) Image
And here is somewhere closer to home…. Image
Read 9 tweets
Jan 27
Booster doses are waning.

Data from the UK’s vaccine study AND data from Israel give cause for concern.

Summary thread 🧵
Israel are well ahead of most of the world in 3rd doses of vaccines. But five months down the line the situation is concerning!
Cases, ICU patients, and deaths all rising steeply.

Hospital admissions at their highest levels since the pandemic began.
Read 12 tweets
Jan 25
Some policy makers are using the “Flu” comparison to argue for doing less/nothing to control Covid.

Here I present an argument against such policies.

Understanding the risk of Covid is useful when deciding your own opinion about gov policy.

🧵

[FYI ⬇️ - Flu vs Covid]
Disclaimer: not a statistician. Clinical academic. This is my understanding of the current risks told plainly. Others better placed to comment further: @Kit_Yates_Maths @chrischirp @dgurdasani1 @JamesWard73 @jburnmurdoch @EricTopol @DrEricDing and others…
Risk to self: the actual risk of death from Omicron is less (vs Delta).

In crude terms, the risk of death from Flu is 0.05% (prob much less).

The current risk from Covid seems to be ~0.2% (vaccinated, confirm, ave)

This is a direct comparison. Real risk is very different.
Read 9 tweets
Jan 25
How similar is Covid to Flu in the UK?

On an individual level, the risk of severe Covid-19 in a fully boosted adult is significantly lower with Omicron than Delta.

How close is that individual risk to the risk with Flu?

Short 🧵
I will provide some data and sources at the end, but the main points are:
1. Rate of death from Covid has dropped significantly over the last year. By about ten-fold.
Read 21 tweets
Jan 22
Despite the dramatic title, Mr Snowdon raises an important point: what happens when number-crunchers neglect human factors.

I fear though, Mr Snowdon has succumbed to the very criticism he levy’s against those arguing for stronger mitigations

Thread
This is not a criticism of the many astute and invaluable statisticians. More a challenge to basic assumptions.

Indeed, often the distance and objectivity is appreciated.
But It is a pattern that seems to be emerging from economists and statisticians, that somehow the resistance of the PM to further mitigations was in some way a success.

While the economic argument seems absent, focus on healthcare numbers seems popular and problematic.
Read 19 tweets
Jan 16
Oh my, Johnson must be getting desperate. His tactic for holding onto power now seems to be “talking up” his success in managing the pandemic.

Some things to bear in mind as the battle for the narrative continues…
While we can get distracted by the ‘with’ or ‘from’ Covid argument, here is the excess death data…one of the good overall measures for how a nation responded to the pandemic.

Ireland, Germany and France had about half as many excess deaths as the UK.
We averaged between 500 to 1000 extra deaths at home per week, throughout the pandemic.

Note, only a fraction were Covid.
Read 11 tweets

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