what that article and study actually says is that the UK’s identified cases only account for 1.2% of our actual cases, and as it’s a relatively older piece... That NOW means that they think around 7,822,750 have contracted the virus in the UK...
This is a significant percentage, around or just under 12% and enough to reduce the impact of any second wave... Even more so when you consider that in a few weeks, when this wave bottoms out that figure will be doubled.
Thank’s for sharing this... It is precisely what I have (very poorly) been trying to point out. An immunity level over 25% and common sense behaviour, should easily be enough to prevent a significant second wave.
Now what I’m wondering is this, if they think Germany has 15% immunity, with their testing rates compared to ours, I don’t understand why they think we have less... They have done three times more tests per 1M people, yet only have less than 50% more confirmed tests than ourselves... Proving we’re hitting more positive tests results per 100 tests than they are! Ours will be higher IMO!!!
I haven't trusted anything that has come out of Oxford university since the start of this outbreak. They had at least 6 students confirmed with the virus yet the university was still operating as normal. They then come out and say that half the British population could have been infected by the virus, and then that they are "80% sure" they will have a vaccine ready by September, when other major researchers are estimating 12-18 months for a widespread vaccine. I'd take everything you read with a pinch of salt.
The figures I am trusting at the moment are the ones from the German scientists, and the ones from the UK Covid-19 symptom tracker app developed by Kings College London.
The COVID 19 symptom tracker app developed by KCL estimates that currently 1.4 million people in the UK have symptomatic COVID 19, whereas on the 1st April they estimated 1.9 million UK citizens had symptomatic Covid 19, which shows that the lockdown is slowly reducing the spread. However, we are going to have to stay in lockdown for a while longer to really push down that number. Remember this is excluding people who are carrying the virus asymptomatically, which could be anywhere from 10-50%, which means there is a potential for 2.8 million people currently infected at this one time, and then we have to consider the virus will have been in the country since late December/early Jan as the outbreak started at the beginning of December in wuhan.
The German scientists believe that the world already has a 15% immunity rate against the virus, and we would need 60-70% for the virus to completely disappear and achieve "herd immunity", which has been heavily talked about. The German scientists believe that as the UK is only testing the NHS and hospitalised cases, that the UK testing regime is only picking up 1.2% of all cases of coronavirus. Our official number of cases stands at 93, 873 so after doing some math that would predict that in reality the following number of people in the UK now have antibodies against coronavirus:
7,822,750.
The UK has a population of 66.65 million and therefore this would estimate that the UK currently has an immunity rate of about 12%. However this will be increasing by the day as even though remember we are in "lockdown", the virus is still spreading day upon day.
The amount of deaths from this has been truly devastating, reported at 128,000 now, but in reality it will be much higher than that as China presumably lied about the number of their deaths as they are way lower than any European country, and the outbreak would have undoubtedly been just as bad in china. Assuming the German scientists are roughly right and estimating a death rate of 0.37%, that means at least 35 million people have been infected, but in reality it could be around 200million infections so far.
Your sums match up with mine.
There are 2 known ways of reducing, and eventually preventing the spread of this virus. Social distancing, which is / could be just temporary, once measures are lifted, it could return. Or heard immunity, either via vaccine or natural immunity through previous infection. A much longer term solution, but unfortunately the natural route means a large amount of deaths in the short term. So... a combination of both is what I believe many countries, including the UK, have opted for.
Just a little bit on ‘heard immunity.’ It is true that herd immunity itself cannot be achieved until we reach 60% infected, as any level lower than this is not called herd immunity. However, a reduction in transmission rates or R0 (reproductive rates) as it is known can be achieved with lower percentages.
Essentially, to reach full herd immunity, that R0, the number of new people an infected person passes the disease onto, needs to reach 1.0 or lower. At present, without any intervention, the R0 is said to be around 2.25. So every person with covid will infect a further 2.25 people. If 60% of the people that person meets are already immune, that rate comes down to around 0.9. This means instead of the infection rates growing, they will shrink, essentially eliminating the virus.
If, as these studies predict, a minimum of 25% are eventually immune at the end of our first wave. That R0 comes down to around 1.6875... Couple that with basic social distancing and common sense measures, hand hygiene, indoor spacing, possibly even masks, and that R0 will be even lower... Maybe even lower than R0 1.0 slowing the spread and eventually eliminating the virus. Because all the while, with each new case, immunity levels are rising.
Ultimately, whilst the loss of life, and pain, that this causes is heart breaking, and some countries appear to have (for now) avoided that. In the long run, those countries with the higher infection rates will come out of this in a stronger position, and will need less draconian measures in place moving forward.
The negative here for the UK is that we just don’t bloody know for sure how many people have been infected!!!! We only have study based estimates, not data confirmed by testing... This is because we only have antigen tests, which show who is currently infected, and our capacity for that is shocking... We need antibody tests now, which test for immunity, indicating a previous infection, and we need to TEST TEST TEST!!!
Just an average idiot’s understanding of the situation
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Now back on topic... I found it odd that, in many places, theme parks were not initially closed down as bans on mass gatherings were put into place. I presume it’s due to the space involved. At concerts and sports events you sit / stand, within less than 0.5M of several people for an extended period of time, often indoors. Whereas theoretically, at a theme park, it can be better managed.