@MrsTerryPratchett
Probably more like 40-50% have contracted covid in the last 12 months.
Where did you get your doctorate in epidemiology?
I’m not, yet I didn’t see anyone questioning the PP credentials when they quoted 20% unsourced.
Let’s take England’s data for ease.
3.6m confirmed cases (albeit this doesn’t necessarily mean individuals).
So if you took this number: 6% (55m total pop).
Obviously this is a huge underestimate. Firstly because wave 1 barely captured any positive cases, and secondly because so many people are symptomatic and don’t get tested, and many many more are asymptomatic and do not get tested.
Let’s tackle 1). It’s likely the first wave was comparable to the January/Feb resurgence of Wave 2. You are probably talking millions of equivalent undiagnosed cases, for example in January alone there were 1.2 confirmed covid cases, yet for the start of the pandemic up to 1st June there was 150k confirmed cases due to lack of testing etc.
So add 1m (easily more than this). 4.6m
So we are at 8.3%.
Now for 2), let’s take the most recent ONS weekly community data for England. 1 in 115, equating to approx 475k that week to 12th Feb. Positive cases recorded by positive test result from covid dashboard for 6th to 12th Feb: approx 100k.
So a 4.75 discrepancy.
8.3% x 4.75 = 39%.
If you added 1.5m to the “lost” cases for Spring. 9.2% x 4.75 = 44%
If you added 2.0m to the “lost” cases for Spring. 10.1% x 4.75 = 48%.
Sure there are I am sure many flaws this, but this is just my opinion.