scotia wrote:johnhemming wrote:
They were not primary sources. Those were to demonstrate that there are reports of two separate studies of London which found reducing numbers of antibodies. It would not be that difficult to find the primary sources, but I feel that you will not be persuaded by any report that I find.
Have a look at the summary conclusions in
https://www.gov.uk/government/news/larg ... s-findings
"Almost everyone with a confirmed case of COVID was found to have antibodies (96%)."
Here is the actual source, which is better, than the "news" of it on the government site.
https://www.imperial.ac.uk/media/imperi ... 120820.pdf
I think the "discussion" here is about Table 2. Of the 5,446 that had anitbodies 277 had a previous positive Covid test. Of the 99,768 tested 341 had a previous positive Covid test. So 81% (at a 95% Confidence Interval) of those with a previous positive Covid test still tested positive for antibodies. (This then gets adjusted to 96%).
What is quite interesting is that there were 1,144 that were previously suspected of having Covid by a doctor (and presumably either not tested or had negative tests). Of those 1,144 only 353 tested positive for antibodies, which is 31%. Now either Doctors are not very good at diagnosing Covid, or something else is going on here, as that is a huge difference.
So if Doctors generally are not good at diagnosing Covid, but put it on a lot of death certificates, does that mean they have over-represented the number of deaths. But if so what is causing so many of the "excess deaths"? Or they are better at diagnosing very severe cases, many of which go on to be fatalities, but less so mild cases?
A third category is where patients suspected they had previously had Covid (but no test or diagnosis from a doctor). This was 17,893 individuals, of whom only 3,118 had antibodies. Which is 17% of people which is very low given how many people (at least I have heard) say "I am sure I've had it". The "it" presumably in 80% or so of times is something else like a "cold".