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The Coronavirus Discussion Thread.

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Sefton, you really are just searching for anything that might possibly support the case for saying that the current restrictions are an over reaction, aren’t you.


 
Posted : 13/11/2020 6:23 pm
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By this point we should be able to fairly accurately fit case data to hospital admissions and deaths down the line by using data on testing effort and daily cases.

The more I hear about the positive test data the less I care about it. It seems to be subject to all sorts of problems around picking up the virus on the particular day of the test.


 
Posted : 13/11/2020 6:26 pm
 Chew
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33k yesterday 27k today, its looking like the flattening on cases didnt happen to me.
If you look at the cases graph here

I'm only looking at the England data, but you need to look at the positive cases percentage, rather than the headline figures.

Over the last 7 days its seemed to level out at 8.5% of tests are positive.
It could be just random or the effects of the lockdown are starting to slow the rate of growth?


 
Posted : 13/11/2020 6:26 pm
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It seems to be subject to all sorts of problems around picking up the virus on the particular day of the test.

That doesnt change much though so would be factored in given the large number of tests.

Clearly admission data is better to accurately predict deaths but .gov should be acting sooner than this so predictions which are less accurate but earlier could be useful. The head in the sand attitude of our gov means it probably doesnt matter.


 
Posted : 13/11/2020 6:31 pm
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I believe flu admissions are initially being treated as suspected covid which makes sense.(about 3 weeks back the BBC said only 2 influenza admissions in 1 whole week in the uk)

Which if accurate tell you what?
People are not being admitted with anything but the most severe and immediately lkife threatening flu?
That SARS-Cov19 is roughly twice as transmissible than flu so the restrictions are holding back flu?
That people with flu can't get tested for COVID?


 
Posted : 13/11/2020 7:05 pm
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MoreCash

The more I hear about the positive test data the less I care about it. It seems to be subject to all sorts of problems around picking up the virus on the particular day of the test.

So I went for a hospital "Covid" test today ... in order to get tested I had to:
1) have my temperature test normal.
2) not have symptoms
3) not be living with someone who has been told to self isolate

This is what the letter called the "test".
So obviously I can't have COVID or I would have symptoms definitively (or a hospital doesn't know the difference which is even more worrying)
I may have some SARS-Cov19 that is a symptomatic
I've already been pore-screened to make sure I'm low risk
I can't even get through to be tested unless my temperature is "normal"

I'm not a epidemiologist but you'd think this might bias the results towards lower positives and higher asymptomatic amongst those who make it through the barriers to actually get tested.


 
Posted : 13/11/2020 7:14 pm
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I think its a fair question to ask.


 
Posted : 13/11/2020 7:24 pm
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ILI - influenza like illness, if admitted to hospital will be tested for virus. This is a PCR test - quite popular I hear at the moment. They will test for influenza and SARS-COV2. The COVID19 admissions are patients admitted with a positive SARS-COV2 test within 24hrs. It is also possible they might ALSO have influenza, but that's been rare. FDA have already approved a combined PCR test for influenza or SARS-COV2.

Peak influenza period is about the second week in the year. Still rather early for seasonal flu, but Southern countries showed very limited rates, most likely due to COVID social distancing precautions. There's been a lot of discussion on lockdownsceptics, but the truth is somewhat mundane. In July I stated that I expected COVID deaths to replace influenza deaths, with a net increase of 30k additional all-cause mortality deaths under appropriate controls. The worst case was 80k deaths.

[tl:dr] flu and COVID patients present to hospital with similar symptoms so the body count could be flawed. But testing for flu is the same as COVID and distinguishes the two viruses. We'll see the equivalent of a bad flu year with controls, a terrible year without them


 
Posted : 13/11/2020 7:53 pm
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Thank you...respect btw.

Coming on here has put my mind at rest on several occasions now.


 
Posted : 13/11/2020 8:00 pm
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Aug and Sept…. looks rather too high

Piecewise - (three rounds at a time) local regression (not spline) looks a lot nicer doesn't it? Adding a quadratic term means that there is a test for significant curvature, more in keeping with a local SEIR model solution subject to changes in policy.


 
Posted : 13/11/2020 10:33 pm
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burner - I would be much more concerned about multiple dodgy contract awards and politicians with undeclared interests.
GSK are a major global player and would be involved in vaccine development whether or not Vallance held shares.


 
Posted : 13/11/2020 11:58 pm
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Far be it from me to defend my former boss, but the shares were part of his previous remuneration as head of R&D at GSK (not vaccines btw, those are separate to his past role). He has to hold them for a few years to be able to sell them. I think he’s sold all past shares. GSK have said they will sell the vaccine for cost plus 10% I believe. It’s not going to be a money spinner.

Last point, he’s not responsible for vaccine procurement. But I think everyone would think it a good idea to purchase options on future vaccines from a diverse portfolio of possible suppliers.

My views not the company’s, but I’m proud to work for GSK. I don’t think my employment biases my interpretation of the science, but can you be certain 😉


 
Posted : 14/11/2020 12:17 am
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Websites more interesting than gsk employee being paid in shares

Is that we've chosen not to go with the Moderna vaccine as EU & US have

Eggs in one basket etc

Any idea why we've missed out on it?


 
Posted : 14/11/2020 12:35 am
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we’ve chosen not to go with the Moderna vaccine as EU & US have

I thought the gov were spraying money at every vaccine development project and buying options in all of them.


 
Posted : 14/11/2020 12:39 am
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Might be supply based? We have orders for AZ/Oxford (virus), Pfizer (mRNA) and I imagine others including Sanofi/GSK and/or Merck (both spike protein). Moderna might have just sold out of (future) stock! mRNA is a low dose of protein, so you get a lot of doses per batch run compared to spike protein vaccines and virus, but the demand is equally enormous.

Wait and see what happens. Much noise but little light at the moment - and I mean that with regards to eventual efficacy, protection, supply, cold-chain distribution, duration, repeat challenge, antigenic diversity, safety...... In fact just about everything! Pfizer have proven the concept of antibody protection for disease (COVID symptoms) for 28 days. Patience... It's just like being at work, people are always very fast to read into limited data all manner of things (positive and negative) 😉


 
Posted : 14/11/2020 12:43 am
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As both Pfizer & Moderna mRNA, I suppose similar anyway

Still be nice to increase it options

In work we've just been told that government are putting restrictions on lab supplies: filtered pipette tips, gloves, rna QC reagents etc

As if it wasn't hard enough in work already!


 
Posted : 14/11/2020 12:47 am
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That fit looks really good @TiRed! Can you diagnose growth rate/infection numbers from it for comparison with their official results?


 
Posted : 14/11/2020 9:26 am
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Well you always have the first derivative of the local polynomial. R is simply this slope convolved with a generation time distribution. I’m now of the opinion that LOCAL regressions must be the way forward. Trying to describe the entire course of a process from March, with multiple policy changes, is a hiding to nothing. Covid-projections came to the same conclusion. Your ode method is pretty much the same, as long as the window is within the local dynamic range, you’ll get a nice fit and a reasonable forward projection. Until policy changes (again)!

Btw I’ve shared the methods with the react team.


 
Posted : 14/11/2020 10:07 am
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I meant "can you" as in will you share the numbers with us not "can you" as in is it technically possible 🙂


 
Posted : 14/11/2020 11:38 am
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I don’t know the right terms to use but there is a question I need to ask.
I was watching an interview with the top USA Virologist or Immunisation expert and he had some interesting things to say about the vaccine.
He reiterated the handling problems but also highlighted that it could only be handled and administered by trained personnel. It is not the same as a ‘normal’ vaccine. The logistics of administering the vaccine are immense and going to take a long time.
The question I have is – and forgive me if I use the wrong terms – if something is stored at -40°C wont it be solid?
If so does this require a controlled raising back to a specified temperature before use?


 
Posted : 14/11/2020 10:57 pm
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Yep exactly that. The pfizer vaccine will be a pain in the arse.
Apparently it is coming as a 2 component vaccine stored at -70°c.
The handling of mrna is delicate, I used to work with biopharms and we had to be very careful. This will be far worse.
First world vaccine only am just hoping the more traditional and easier to handle one's are highly effective.


 
Posted : 14/11/2020 11:17 pm
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The question I have is – and forgive me if I use the wrong terms – if something is stored at -40°C wont it be solid?
If so does this require a controlled raising back to a specified temperature before use?

The vaccine requires this level of handling because its m (messenger)RNA based, RNA is the intermediary step between DNA (the storage medium of genetic info) & Protein (the stuff our cells are made of)

Normally RNA only exists briefly as the genetic code is transcribed into functional proteins

Both DNA & Protein are relatively stable, often refrigeration at 4C or room temp is fine

RNA is degraded swiftly by enzymes in the body (free floating rna will interfere with gene expression so its unwanted)
Warm temps degrade RNA rapid, through chemical degredation & RNASE enzyme activity that is inhibited by super cold temps

RNA will be suspended in water so at -40 it will be solid, ideally you want to thaw it rapidly and use immediately to prevent degradation

What you really dunt want is to have it thaw during storage or transport, degrade & refreeze so you are using a reduced efficacy vaccine, you can have a temperature probe with your sample that will record how it's been handled

That's why cold chain logistics are something we will be hearing about & why companies that specialise in this are set to make £££££!

I hear from colleagues that AZD vaccine has sone good news to announce shortly as well, but as that's a viral vector, I'm not sure logistics will be much better, we have to store adenoviruses at - 80 so id guess it's the same for this


 
Posted : 15/11/2020 1:28 am
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Asking for my mum: is the Pfizer vaccine a live vaccine? If so that rules her out of receiving so hopefully some other options are suitable for an immuno-compromised person. Thanks!


 
Posted : 15/11/2020 2:30 am
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Can someone please correct me if I'm wrong but where has the supposed huge pandemic gone? Despite the continued doom and gloom in the media, the current weekly death figures don't appear anything that unusual like they did back in March and April? So what's missing from this graph?

UK 2020 Deaths by Week


 
Posted : 15/11/2020 7:34 am
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KImbers, thanks for that description, very clear.


 
Posted : 15/11/2020 9:01 am
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Asking for my mum: is the Pfizer vaccine a live vaccine? If so that rules her out of receiving so hopefully some other options are suitable for an immuno-compromised person. Thanks!

No, its an RNA vaccine, that means it's a stretch of RNA, it gets converted by your body into a chunk of covid protein that your bodies immune system can then recognise


 
Posted : 15/11/2020 9:47 am
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that your bodies immune system can then recognise

Could be an issues for Lupus sufferers, as one of the major issues there is the bodies confusion with recognising such things.


 
Posted : 15/11/2020 10:18 am
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Can someone please correct me if I’m wrong but where has the supposed huge pandemic gone?

The latest ONS numbers are (IMO) easier to make sense of. You can see that red line ramping up nicely in figure 2. Whether that justifies a national lockdown, I don't know.

https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/bulletins/deathsregisteredweeklyinenglandandwalesprovisional/weekending30october2020

EDIT: as ever, that is packed full of interesting information.


 
Posted : 15/11/2020 10:40 am
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the current weekly death figures don’t appear anything that unusual like they did back in March and April?

I analyse this data weekly and use a ten year background reference from ons (they only report five but list all data). In week 44, which was a week last Friday, 10,800 people died. That is 700 more than the highest number recorded ten-year number, and about 1400 (15%) more than the ten-year mean - so 200/day.

Before Christmas we will see a modest rise to about 20-25% above historic mean equal to an excess of 2000-2500 deaths per week. These are additional deaths over underlying respiratory deaths. Summing over the winter period will lead to 30k deaths, which would be a bad flu year, but a good Covid year. That’s a bad flu year with a second lockdown, tiers, working from home and possible further restrictions after Christmas.

So yes, there is an epidemic ongoing, but the contact restriction measures are slowing the spread. A vaccine may help replace social distancing to maintain mortality in 2021.


 
Posted : 15/11/2020 10:41 am
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Well… I’ve deleted all that reply to you Jim… TiRed put it better. A little to add… deaths currently above not just the average, but also the highest, on your graph… and that’s with all the measures we have in place. That we haven’t had a repeat of the Spring is because we are (mostly) all acting to stop the spread. We lost our next door neighbour this week, and I lost my uncle last week… the epidemic is ongoing, the fact that we have it as “under control” as we do is great… but there are many real human reasons why some of us wish we had intervened differently in September, rather than waiting for these high death and hospital admission numbers, and then only half heartedly used the “stay at home” message.


 
Posted : 15/11/2020 11:05 am
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Thanks TiRed, appreciate your reply. Are there any figures out there to separate those out who died 'from Covid' from those that died 'with Covid', i.e. a positive test result? My concern is spiked after reading this in our local paper:

https://www.dailypost.co.uk/news/north-wales-news/woman-who-fell-window-died-19270715

Old lady of 94 fell out of a window but tested positive for Covid whilst in hospital, listed down as a Cover death. Hopefully this is an isolated and tragic case but it highlights the importance of using the correct methods to identify genuine Covid deaths from those in hospital merely 'with a positive Covid test'.

It is concerning that there is a small level of excess deaths right now, and more so to hear that this could grow, but similarly are there any stats out there to show what is causing these? Could the concerns from people like Macmillan highlighting the possible 50,000 undiagnosed Cancers out there right now be part of this excess death impact?

https://www.macmillan.org.uk/about-us/what-we-do/we-make-change-happen/we-shape-policy/covid-19-impact-cancer-report.html

Would you agree that Cancer patients having treatment and diagnosis delayed is a price worth paying if it means that Covid death rates are lower? No easy solution I'm sure but I'm really struggling to see how there can be an ethical trade off here which is why the 'from Covid' or 'with Covid' would seem such a critical thing to be aware of.


 
Posted : 15/11/2020 11:22 am
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And around we go again… I know people who can’t get treatment BECAUSE we have the virus at the levels we do locally… If you let the virus rip, cancer treatment will come to a dead stop again, as it just about did in the Spring.

As for the “with” conundrum… that’s all you can do data wise. Everyone I know who has died thanks to COVID had a pre-existing condition. You can record who died with COVID in the system with a test… you can’t start trying to isolate who died from COVID alone, as comorbidities are very much the nature of this… be it cardio-vascular conditions, cancers, or accidents.


 
Posted : 15/11/2020 11:25 am
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There’s a lot of noise about died with and died of Covid. COVID19 is the disease, sars-cov-2 the virus that infects and leads to disease. Epidemiologists count cause of death by an ICD10 code. They invented a new one for COVID19 the disease 🦠 in addition to influenza (99). ONS look at deaths by the ICD10 code and partition into respiratory vs other deaths.

We say in the business that death is the hardest endpoint. They may have died with or of, but they definitely died. So I switched to analysing all-cause deaths in April.

Cancer deaths will feed in with time and there are about 1000 diagnoses per day. But it is too early. Cardiovascular deaths and dementia are u likely to change but there has been a switch from dying in hospital to dying at home. But the numbers are steady.


 
Posted : 15/11/2020 11:40 am
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I'm sure someone will look at the data properly at some point to remove old ladies who fell out of windows, but perhaps also include people who died from Covid-related health problems post 28 days.

I'm going to stick my neck out and say that the second group is going to be significantly larger than the first.


 
Posted : 15/11/2020 11:51 am
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Would you agree that Cancer patients having treatment and diagnosis delayed is a price worth paying if it means that Covid death rates are lower? No easy solution I’m sure but I’m really struggling to see how there can be an ethical trade off here which is why the ‘from Covid’ or ‘with Covid’ would seem such a critical thing to be aware of.

Cancer treatment is ongoing.
Cancer testing and diagnosis is ongoing.
The lockdown is enabling this to happen by relieving pressure on hospitals and the NHS.
It is maintaining capacity for patients to be treated, including cancer patients.
Without the lockdown and other social distancing, it would be a lot harder for them to continue to treat cancer.
The lockdowns have prevented my hospital being overrun and enabled them to treat me with 6 CT scans, monthly blood tests, a biopsy, a cancer op, three cycles of chemotherapy, and all the associated remedial medication needed over the last 8 months.

It is a horrible misrepresentation to suggest it is either/or.
Keeping covid cases, admissions, and deaths low is a massive benefit to cancer patients. Treatment and daily life.
Letting it rip would be catastrophic for our treatment and outcomes.


 
Posted : 15/11/2020 12:04 pm
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Would you agree that Cancer patients having treatment and diagnosis delayed is a price worth paying if it means that Covid death rates are lower? No easy solution I’m sure but I’m really struggling to see how there can be an ethical trade off here which is why the ‘from Covid’ or ‘with Covid’ would seem such a critical thing to be aware of.

See this grips my shit, I dont understand how people able to type coherent sentences can be so stupid.

Its not lockdown or treat cancer patients, its lockdown to enable the nhs to treat other things. How is this hard....wanders off muttering....


 
Posted : 15/11/2020 1:45 pm
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My initial reaction was similar to A-A's, but loum has put it so much better and coherently.

If only our idiot government could communicate the wider picture so well.

All the best with the treatment loum.


 
Posted : 15/11/2020 3:12 pm
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It’s an often overlooked point, but the average age of death just happens to coincide with the average age that treatment and ITU admission is denied. A functioning healthcare system not swamped by COVID19 cases is in everyone’s interest. Sadly the only available means of controlling that tidal wave of cases is currently contact restriction.

In a tsunami, it’s not the initial wave, it’s the surge behind it that just keeps coming.

And yes loum I hope the treatment goes well. I know first hand how stressful any interruption of cancer treatment can be.


 
Posted : 15/11/2020 3:23 pm
 grum
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Apologies if posted already but this is pretty interesting piece about how other countries are handling quarantine etc

https://edition.cnn.com/travel/article/selina-wang-asia-covid-quarantine-intl-hnk/index.html

Would we trade individual freedom/rights for being able to return to mostly normal society? The chances of us being able to run these systems vaguely competently seems pretty slim anyway.


 
Posted : 15/11/2020 5:16 pm
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Thanks TiRed, appreciate your reply. Are there any figures out there to separate those out who died ‘from Covid’ from those that died ‘with Covid’, i.e. a positive test result? My concern is spiked after reading this in our local paper:

Back-of-the-envelope calculation:

The ONS are saying that the infection rate is about 1% at the moment.

And very roughly, about 10,000 people a week die overall. So that should mean you would expect about 100 people per week to die _with_ SARS-Cov-2 but _of_ something unrelated (falling off a ladder).

The actual weekly number is 2890 for the past week.

(Disclaimer: I am not a statistician at all, I can barely even do sums. But I can spot an order-of-magnitude difference).


 
Posted : 15/11/2020 5:30 pm
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TiRed...please could you allaborate on the denial to intensive care for 80plus patients?


 
Posted : 15/11/2020 6:39 pm
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Its not lockdown or treat cancer patients, its lockdown to enable the nhs to treat other things. How is this hard….wanders off muttering….

I was under the impression that there was a deliberate policy to delay treatment to non-Covid patients to free up capacity for possible Covid patients. GP appointments very hard to come by, non-urgent operations cancelled, screenings cancelled, patients given the impression that the NHS needed to be saved rather than used?

But what are we saving the NHS for exactly? Is it not there to be used in full or are we saving to up for some possible future event? Having paid for it, is the NHS not there to save us, or have I got something wrong?

I spoke to a consultant friend at our local main hospital here in Wales last week and asked her how many Covid-19 patients they had in. 7 was her answer, just 7. Yet the hospital are still not seeing my wife in person for a potentially serious condition that needs a proper diagnosis. 6 months she's waited, you know - because of Covid!

I also understand to that our hospitals, depending on area, are currently running at between 80% and 95% capacity right now but that this is completely normal for this time fo year? Also our Nightingales remain largely unused? Is it just me that thins this is crazy?


 
Posted : 15/11/2020 6:47 pm
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80 is not any kind of automatic cut-off for ITU.

Many people younger than that are often not considered able to benefit from ITU and the consideration of that is the deciding factor in any admission to critical care. There is little point admitting someone who will die despite any intervention; it is cruel and inhumane. People are sometimes admitted but with a definite ceiling of care; often they would be admitted but would not be considered for ventilation if that was considered futile.

The ethical judgements surrounding admission to ITU are many and complex, but age alone is not a major consideration.


 
Posted : 15/11/2020 6:49 pm
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I was under the impression that there was a deliberate policy to delay treatment to non-Covid patients to free up capacity for possible Covid patients. GP appointments very hard to come by, non-urgent operations cancelled, screenings cancelled, patients given the impression that the NHS needed to be saved rather than used?

But what are we saving the NHS for exactly? Is it not there to be used in full or are we saving to up for some possible future event? Having paid for it, is the NHS not there to save us, or have I got something wrong?

Think that might have been the case at the beginning of wave 1, when we really had no idea But the more recent messages have been to encourage people to access the NHS. But again, the point is that WITH massive restrictions, lockdown etc, we're reaching capacity. Without them, clearly we'd be exceeding it.


 
Posted : 15/11/2020 7:21 pm
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