@Shotclog - You write:
"Britain has had an average of 30,000-40,000 (roughly) "cases" a day for months now and yet hospital admissions and deaths remain stubbornly flat. The vaccines obviously work by reference to the only important measure, namely the ability to limit serious illness and death."
I guess the premise you mean to cite here is that for the past few months, despite numbers of reported "cases" not being far below what they were in January, before mass vaccination, when the reported rate of deaths "with Covid" was high, the reported numbers of hospital admissions "with Covid" and deaths "with Covid" have been much smaller than they were then.
That does not show that "vaccines obviously work".
Lots of these things trotted out are because people don't understand ARA, RRR and VE and the vital differences.
Lots also misuse *unadjusted* data so completely fail to remove biases or confounders.
Is there a graph that plots covid cases/hospitalisations/deaths from the beginning (Mar 2020?) to now (Nov 2021) with indicators when the various vaccines and other measures (e.g. masks) were introduced, to give a quick visual indication of their (in)effectiveness?
Negative vaccine effectiveness means that the calculations indicate that the vaccinated are more likely to catch the disease that they're vaccinated against, than the unvaccinated.
This seems like it should be impossible, but there are fairly well understood immune mechanisms that might result in it.
The recent studies out of Sweden and Qatar that have identified negative vaccine effectiveness are very concerning. These two studies aren't enough in themselves to prove that the vaccines are now making things worse, but they very much are a sign that we really need much more up-to-date information about how the vaccines are performing.
The point about hospitalisations vs cases is quite correct -- in many respects the case load doesn't matter that much. However, I'd note that we've just entering the season where upper respiratory tract infections start to cause significant problems -- it perhaps shouldn't be surprising that hospitalisations were low in summer and autumn, but similarly, it should be expected that hospitalisations will rise significantly as we go into winter.
Negative VEs in this case are applying the wrong data and wrong denominators to the data.
(And no, Qatar didn't show a negative VE).