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COVID 19: What Are Prospects for the Duration?

Doc Gumshoe on Arizona, Sweden, Herd Immunity and the Progress of Vaccine Programs

By Michael Jorrin, "Doc Gumshoe", October 22, 2020

The term “the duration” immediately recalls the Second World War. Nobody had any idea when it would be over, and so discussions of a lot of World War II-related events and conditions prominently featured the phrase “for the duration” – as in great numbers of combat fatalities would continue to be reported for the duration, and gas rationing would continue for the duration.   That basically meant that these conditions would continue as long as they continued, but nobody really knew for how long.      

The same thing is the case with COVID 19.   It is the dominant reality for the duration, which means it will go on as long as it goes on.   How long that will be, no one really knows.   But perhaps there are signs and indications that we can look at today as a way of bringing our speculations a bit more into focus.   

What makes for hot news is when there are upsurges in new COVID 19 cases, whether these take place in one neighborhood in Brooklyn, in an entire state in the midwestern US, or the whole subcontinent of India.   Information about how an upsurge is controlled is, for some reason, not so hot.   But if we’re keeping an eye out for relevant developments in this pandemic, the not-so-hot news can be just as important, and perhaps more important.

For a start, let’s look at how two very different places managed, or attempted to manage, the coronavirus. 

Sweden and Arizona versus COVID 19

Sweden pinned its hopes on herd immunity.   The idea was that as more people become infected and (hopefully) recovered from the disease, and therefore acquired a degree of immunity, there would be a decreasing number of people in the community who would spread the infection.   The epidemic in Sweden would therefore diminish along with the proportion of potential disease spreaders.   But for this to happen in reality, there either has to be an effective vaccine or a very high fraction of the population has to develop immunity due to having had the disease itself.   In terms of defeating COVID 19, this was an optimistic assumption – an assumption that took for granted that many, many people would acquire the infection, and that perhaps a few of these unfortunates would die, but that the COVID 19 plague would go away.   That assumption did not work out.

At this point, Sweden has over 100,000 cases and nearly 6,000 COVID 19 deaths.   Its immediate next-door neighbor, Norway has about 16,000 cases and fewer than 300 deaths.   Sweden’s population is about double Norway’s, but Sweden’s infection rate is triple Norway’s and its death rate is ten times higher. 

The inhabitants of the two nations are similar, and both nations have excellent health-care systems.   The chief difference is that while Norway put into practice strict preventive measures such as social distancing and masks, Sweden did not.   Some individuals in Sweden took precautions as a matter of individual choice, but the government made no move to enforce or even encourage these precautions.   The results are evident from the comparable infection and death rates.

Now let’s take a look at Arizona.   When the coronavirus started to emerge as a serious threat, Arizona imposed business closures and stay-at-home orders similar to those in many other states.   But as there began to be hints that the threat from the virus might be abating, Arizona’s Governor Doug Ducey, yielding to pressure to re-open the state, did not continue these closure orders beyond May 15th.   Whereupon daily diagnoses of COVID 19 took off like a rocket, climbing by a factor of ten over the following six weeks.   That surge reached its crest around the end of June, at which point Governor Ducey reimposed those previous protective measures.   And from that point, the number of new infections plummeted, so that by early August, new infections were down to the levels seen in early May.  

The graphic below, from the Morbidity and Mortality Weekly Report (part of the CDC) tells the story.

Certainly, based on those data, the protective measures that were reimposed in the middle of June are what did the trick.

The moral of this story, if it needs to be pointed out, is that simply letting herd immunity develop on its own causes severe harm to many, many people.   It is a deadly strategy.

How to get to herd immunity

The results of Sweden’s reliance on herd immunity should not discredit herd immunity as an effective way of curbing the spread of a communicable disease.   The question is, how is herd immunity achieved?   Sweden apparently thought that it would come about naturally as more and more people got infected and recovered, having acquired some immunity.   This may have led to the conclusion that the best way of achieving this goal was to do little or nothing to prevent the spread of infection.   Historically, some epidemics may have been slowed in exactly that same way.   At the time of the 1918 flu pandemic, there was no flu vaccine, and it was largely herd immunity that finally slowed it down.   However, other devastating infectious diseases have effectively been stopped by means of vaccines, smallpox and polio being prime examples.   And, of course, widespread vaccination is the prime means of getting to herd immunity.   

A group of three eminent medical scholars have proposed an alternative method of attaining herd immunity in a document entitled “The Great Barrington Declaration,” which reportedly has been signed by over 90 clinicians and 300 medical workers.  They propose a strategy which they suggest will offer maximum protection for persons most at risk of serious infections and death, while permitting people who are at lower degrees of risk to continue relatively normal lives.  Here’s an excerpt from that document:

“Current lockdown policies are producing devastating effects on short and long-term public health. The results (to name a few) include lower childhood vaccination rates, worsening cardiovascular disease outcomes, fewer cancer screenings and deteriorating mental health – leading to greater excess mortality in years to come, with the working class and younger members of society carrying the heaviest burden. Keeping students out of school is a grave injustice.

“Keeping these measures in place until a vaccine is available will cause irreparable damage, with the underprivileged disproportionately harmed.

“The most compassionate approach that balances the risks and benefits of reaching herd immunity, is to allow those who are at minimal risk of death to live their lives normally to build up immunity to the virus through natural infection, while better protecting those who are at highest risk. We call this Focused Protection.

“Those who are not vulnerable should immediately be allowed to resume life as normal. Simple hygiene measures, such as hand washing and staying home when sick should be practiced by everyone to reduce the herd immunity threshold. Schools and universities should be open for in-person teaching. Extracurricular activities, such as sports, should be resumed. Young low-risk adults should work normally, rather than from home. Restaurants and other businesses should open. Arts, music, sport and other cultural activities should resume. People who are more at risk may participate if they wish, while society as a whole enjoys the protection conferred upon the vulnerable by those who have built up herd immunity.”

… but I strongly disagree with that position

Having quoted extensively from the Great Barrington Declaration, I needed to emphasize my disagreement, in bold italics.

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There’s no question that the lockdown caused serious problems to the economy and an enormous disruption of people’s lives.   But the authors of this declaration seem to ignore the really horrendous effects on the health and lives of those persons whom they describe as “not vulnerable.”   In my view, calling them “not vulnerable” is a flat-out falsehood.   Younger people can and will get sick, and some of them will die.   And, on top of that, younger people and quite young children can pass the coronavirus infection on to those same susceptible older people.   Kids can infect and essentially kill their grandparents.   What the Great Barrington Declaration proposes is to trade the lives and health of some for the benefit of others.

On October 15th, a letter was published in The Lancet, signed by 80 medical and scientific professionals, that opposed that proposal in the most emphatic terms:

“This is a dangerous fallacy unsupported by scientific evidence.

“Any pandemic management strategy relying upon immunity from natural infections for COVID-19 is flawed. Uncontrolled transmission in younger people risks significant morbidity and mortality across the whole population. In addition to the human cost, this would impact the workforce as a whole and overwhelm the ability of health-care systems to provide acute and routine care. Furthermore, there is no evidence for lasting protective immunity to SARS-CoV-2 following natural infection, and the endemic transmission that would be the consequence of waning immunity would present a risk to vulnerable populations for the indefinite future. Such a strategy would not end the COVID-19 pandemic but result in recurrent epidemics, as was the case with numerous infectious diseases before the advent of vaccination. It would also place an unacceptable burden on the economy and health-care workers, many of whom have died from COVID-19 or experienced trauma as a result of having to practise disaster medicine.”

The Great Barrington Declaration also provoked stern rebuttal from the Infectious Disease Society of America (IDSA), which issued a statement to the effect that they “strongly denounced” that strategy, saying that “it comes without data or evidence.”

And here’s a quote from Dr Anthony Fauci:

“Anybody who knows anything about epidemiology will tell you that this is nonsense and very dangerous, because what will happen is that if you do that, by the time you get to herd immunity, you will have killed a lot of people – that would have been avoidable.”

Just to be really, really clear, what these people are denouncing is the concept of deliberately trying to get to herd immunity by letting increasing parts of the population get infected with the coronavirus. Arriving at herd immunity by means of a vaccine, on the other hand, is generally agreed to be an objective of the greatest importance.

So, how are we doing in the quest for vaccines?

In spite of repeated proclamations from On High that there would be a vaccine widely available by November 3rd, or at least before Christmas this year, it doesn’t look as though that’s going to happen.   Just a few days ago (as I write this), Dr Moncef Slaoui, who is the co-chair of Operation Warp Speed, made a statement that the government agency (which had been organized to accelerate the vaccine process) was urging manufacturers not to apply for emergency use authorization (EUA) until they had enough doses of their vaccine on hand to vaccinate a meaningful portion of the population.   

Operation Warp Speed, as perhaps you know, is a $10 billion initiative, whose central goal is to develop, produce, and distribute 300 million doses of an effective vaccine by mid-January of 2021.   The organization is quasi-military – more than 60 military officials are on the organization chart.   It’s acknowledged that the military have no knowledge of the science of vaccine development.   But they have already helped prop up more than two dozen vaccine manufacturing facilities by flying in equipment and raw materials from all over the world.   They have also set up significant cybersecurity and physical security operations to ensure that any eventual vaccine is guarded very closely from possible intervention by forces that may not want the US to be the first nation to have an effective vaccine.

Dr Slaoui has suggested that FDA approval of a vaccine that was not actually available at that time would be “a major disappointment.”   Polls have shown that many Americans are mistrustful of vaccine development being rushed and inadequately tested; as many as 50% have said that they would refuse a vaccine produced under those circumstances.      

The FDA has been trying to clarify the regulations under which a vaccine would receive an EUA.   The agency just recently posted their updated safety standards in advance of a meeting of the advisory committee which advises the FDA on safety standards, scheduled for October 22nd.   The FDA wants vaccine manufacturers to collect safety data on at least half of the trial subjects for two months after they have received their second dose of a two-dose vaccine.   

Of the current frontrunners in the vaccine race, the only one that uses a single-dose vaccine is the Johnson & Johnson candidate.   But J & J just recently interrupted its Phase 3 clinical trial due to a “safety incident.”   Currently, 60,000 persons are enrolled in the trial, which remains on hold.   J & J declined to provide further details, but pointed out that it is not apparent in cases like this whether the adverse event took place in the treatment arm or the placebo arm.   Even though the trial has been interrupted, it continues to be blinded, therefore no one knows the status of an individual subject.

At this point Pfizer in collaboration with BioNTech are the leaders of the pack.   Their vaccine is a messenger RNA formulation.   These are much quicker to be developed, particularly in the early stages.    They recently got FDA approval to include subjects as young as 12 years old in their safety trials.   Most other vaccine trials are not enrolling any subjects under the age of 18.   As of mid-September, Pfizer/BioNTech announced that only 12,000 of the projected 30,000 subjects had received a second dose of the vaccine, meaning that they would have the necessary safety data to apply for an emergency use authorization by mid-November at the earliest, since it usually takes about two months for vaccine-related adverse events to emerge.   Data on the efficacy and immunogenicity of the vaccine will follow.   Some estimates have put the time frame for such data as mid-January to mid-February of 2021.

It is not clear at this point what standard the FDA will use to judge the effectiveness of vaccine candidates.   A potential standard that has been aired and discussed, mostly critically, is that to receive any kind of approval, a candidate would need to demonstrate that in at least half of the vaccinated trial enrollees, the COVID 19 symptoms would be reduced by about half.   This “half of a half” standard may have some merits, particularly when it comes to speed of arriving at a decision and getting a vaccine out in quantity, even if it is perhaps only somewhat effective.   

As you can see from the table below (which appeared in the October 13th issue of Lancet), there are currently nine Phase 3 clinical trials in COVID 19 vaccines underway.   The other presumed front-runner, Moderna, based in Cambridge, MA, has not received FDA approval for its candidate vaccine.   Nonetheless, they have announced plans to make between 500 million and 1 billion doses of their vaccine per year, when it gets approval, whenever that might be.  It has been pointed out several times, including in past Doc Gumshoe pronouncements, that Moderna has not yet brought a vaccine for any disease through the approval process.

Phase 3 trials

Developer


Platform

Location
AstraZeneca; University of Oxford (30 000 participants)Chimpanzee adenovirus (ChAdOx1/AXD1222)UK; India; Brazil, South Africa; USA
Moderna; National Institutes of Health (30 000 participants)RNA (mRNA-1273)USA
Pfizer; BioNTech (44 000 participants)RNA (BNT162b1 and 

BNT162b2)

USA
The Janssen Pharmaceutical Companies of Johnson & Johnson (60 000 participants)Adenovirus serotype 26 vector (Ad26.COV2.S)USA; Argentina; Brazil; Chile; Columbia; Mexico; Peru; Philippines; South Africa; Ukraine 
The Gamaleya National Research Centre for Epidemiology and Microbiology; Academy of Military Medical Sciences (40 000 participants)

 

Adenovirus serotype 5 vector and adenovirus serotype 26 vector (Sputnik V)Russia
CanSino Biologics; Academy of Military Medical Sciences (40 000 participants)Adenovirus serotype 5 vector (Ad5CoV)China; Pakistan
Sinovac Biotech (9000 participants)Inactivated virus (CoronaVac)Brazil; Indonesia
Sinopharm; Wuhan Institute of Biological Products (21 000 participants)Inactivated virusThe United Arab Emirates; Bahrain; Peru; Morocco; Argentina; Jordan
Sinopharm; Beijing Institute of Biological Products (5000 participants)Inactivated virus (BBIBP-CorV)The United Arab Emirates

The AstraZeneca trial is on hold in the US because of an adverse event which took place in the UK.   As mentioned earlier, the Janssen/J & J trial is similarly on hold due to an adverse event in one participant. 

In addition to the nine Phase 3 trials shown above, 21 Phase 1 and Phase 2 trials are now underway.   Inovio, which was one of the first pharmaceutical companies to announce that they were developing a vaccine against the coronavirus, is only now in Phase 1 trials for its candidate vaccine.

Also in Phase 1 are two major contenders – Sanofi and Merck, both of whom entered the race relatively late.   Sanofi is developing a messenger RNA vaccine in collaboration with Translate Bio of Lexington, MA, relatively small biotech that has been working with mRNA for the past ten years.   Phase 1 trials with this vaccine are expected to start in November.   John Shiver, head of vaccine R& D for Sanofi, projected that the earliest their vaccine might be approved, if it has been shown to be safe and effective, would be the second half of 2021.   The partners believe that they can make between 90 and 360 million doses of a mRNA vaccine against the coronavirus before the end of 2021.

Sanofi has a second vaccine in development.   This one is a recombinant protein vaccine, which is used with another compound to boost the response of the immune system.   The second compound is made by Glaxo SmithKline.   Currently, a Phase 1/2 clinical trial involving 440 subjects is underway.   Safety and preliminary immunogenicity data may become available by the end of December, according to John Shiver.   Sanofi/GSK are currently manufacturing doses of the actual vaccine, and expect to have 100 million doses by that time, in case the FDA issues an emergency use authorization that soon.

Sanofi’s recombinant protein vaccine uses the same platform as Sanofi’s Flublok vaccine, which may be an advantage, since regulators are already familiar with the platform’s mechanism, and thus may go through the approval process somewhat more quickly.

One of Merck’s two vaccine candidates also employs a platform that the regulators understand.   The vaccine is made by combining genetic material from the coronavirus, SARS-CoV-2, which causes COVID 19, with a virus that can infect humans without making them ill.   This virus, the vesicular stomatitis virus (VSV), has been abundantly shown to trigger a robust immune response in humans.   The VSV virus was fused with the virus that causes Ebola, producing a vaccine that has been reported to have outstanding efficacy.   An unusual feature of the VSV Ebola   vaccine is that it works equally well in the elderly as in younger people.   If the COVID 19 vaccine had features similar to the Ebola vaccine, that would be a marked advantage.

A second vaccine is being developed by Merck in collaboration with their newly-acquired subsidiary, Themis BioScience.   This candidate uses an attenuated measles virus as the vector for the coronavirus genetic material to the human immune system.   As yet, no licensed vaccine uses this platform, but other similar vaccines under development are showing promise.   

In all, 30 COVID-19 vaccine candidates are at some stage of development.   It’s highly likely that some of these will receive emergency use approval, and some may even receive full FDA approval.   Some of these will offer only partial protection, and offer protection to some persons but not others.   But some vaccines may be highly effective, and some vaccines may protect the great majority of individuals.   With a disease that has attained pandemic proportions – at this moment, nearly 40 million cases globally, and well over a million global deaths – even a half-way benefit to half the population is better than nothing, especially if more robust and broadly effective vaccines come along.   

Speaking now for myself, if the first vaccine that came along was one of those half and half deals, and I was deemed eligible to receive it – and if it had received EUA from the FDA – I would go ahead and get myself vaccinated.   And then, when a better one came along, if there were no contraindication, I would get myself vaccinated again.   My guess, based on what we know up to this point about the mutability of the coronavirus, is that there will be no single vaccine that is good for a lifetime of immunity.   Whether it will need to be repeated annually, like the flu vaccine, no one yet knows.   For the duration, we will need to base our decisions on whatever we know at this point.   

Other COVID-19-related topics

Scientists and the medical community in general have now been working with and investigating the coronavirus for almost a year.   They have learned a good deal, and although quite a lot about the coronavirus and the disease (or diseases) that the coronavirus causes is still poorly understood, what they have learned will likely provide avenues that lead to effective ways of treating and managing this disease.       

Here are a few of the COVID-19-related topics that Doc Gumshoe will take up in the next epistle:

  • The relation between virus load and the severity of symptoms;
  • The increasing range of treatment options for COVID-19 that, while not offering a cure, do address patient symptoms;
  • The relationship between obesity and COVID-19 severity;
  • The neurologic symptoms that COVID-19 produces, particularly in young people;
  • How the coronavirus affects persons with different blood types;
  • The clinical effect of coronavirus antibodies;
  • Cardiovascular effects of COVID-19
  • The disruption of the renin-angiotensin system (RAS) as the mechanism through which the coronavirus wreaks its devastation.

* * * * * * *

And, in the intervals when I turn my attention away from COVID-19 (believe me, this takes an effort of the will), other topics attract me.   For example, one that was suggested by one of the Gumshoe faithful was the possibility that memory loss was mostly due to bacteria.   Can this be true?   Doc Gumshoe will try to find out.   In the meantime, keep those stimulating comments coming at me.   Best to all, Michael Jorrin (aka Doc Gumshoe)

[ed. note: Michael Jorrin is a longtime medical writer (not a doctor), who I dubbed “Doc Gumshoe” many years ago — he writes health and medicine-focused columns for our readers a couple times a month, and though he does not generally cover investment ideas he has agreed to our trading restrictions. You can find his past columns here.]

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Bill
Guest
Bill
October 23, 2020 10:59 am

I’m a little disappointed in the Doc’s analysis. On the WHO’s own figures, 265 million people have been pushed to the brink of starvation because of the economic ruin to poor people caused by lockdown. No work equals no money equals no food. Estimates widely available show that 10 million people suffer from domestic abuse in the USA alone. Lockdown must be their worst living nightmare. Just failing to see any balance in his arguments.

mgv
Member
mgv
November 2, 2020 10:42 pm
Reply to  Bill

I also think that if there is no vaccine, the current approach will expose the worlds population and all new borns over the next 10 . This story assumes a vaccine and a limited shelf life issue.

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Random
November 2, 2020 2:28 pm

What’s the source for HCQ on its own not working? Here’s a long list of studies https://c19study.com/ many of them using HCQ alone, where early use has been found very effective, together with an estimate of the number of deaths (570,000 at the time of writing) that could have been saved through early use. HCQ isn’t a new antiviral agent and it would be curious if it didn’t work.

The same website shows a map of countries that do or do not use HCQ, and there’s a striking overlap between countries that don’t use HCQ and the countries with the highest per capita COVID mortality. https://c19study.com/countries.html

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sgpabar
sgpabar
October 23, 2020 2:33 pm

plus people infected w/ the virus & recovered are not the same, most sustained irreversible damage from the virus infection

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Richard
Guest
Richard
October 24, 2020 1:25 pm

It is truly unornate that there is no one that seems to know their history or that can apply some sense to covid 19 first the history since the dawn of time all vires have gone through the population mutated and fizzaled out bubonic Spanish influenzas muies sars all of them you are just kidding your self if you think you can hide from it the virus will take a lot of people mostly old or immune compromised now what no one talks about heart disease cancer diabetes yes and even the flu with a active vaccine program they are all more deadly than covid check the numbers IF the powers that be were to use as much money and effort toward these other killers do you think there might be a few cures DONT buy into the hype remember even with a vaccine regular flu is still deadly

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rmackintosh
Irregular
October 24, 2020 1:44 pm

I think the Swedish approach is not so bad, at least it is sustainable

sweden.deaths.jpg
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John M
Member
John M
October 24, 2020 5:13 pm
Reply to  rmackintosh

It is said in a nursing home people have 1.5 years life expectancy. If they lose 6 months to a year of that (esp. with the quality of life being pretty low by this point) is that really that drastic compared to the economic fallout of never ending lockdowns?

myPanama2
Irregular
myPanama2
October 25, 2020 5:13 am

WHO says that the consequences of lock-downs might be worse than the virus itself. Lock-downs cause significant harm, particularly to the global economy. They make poor people a lot poorer with a doubling of world poverty and doubling of child malnutrition. GDP and life expectancy will go way down. Comparing Sweden (no lock-down) and the U.S. (lock-down): Sweden has had 575 deaths per million and the U.S. 600 deaths per million–there is hardly any difference. Yet life in Sweden has been going on as usual while the economy in the U.S. is on track for a collapse with a coming depression worse than the 1930’s, high inflation, food shortages and homelessness, and a large increase in crime. Also, for ages 20 – 49 0.02% will die; age 50 – 70 0.05% will die; age 71 and over 5% will die. So we just have to find a way to keep Covid away from the elderly.

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Random
October 25, 2020 6:58 pm

“there is no evidence for lasting protective immunity to SARS-CoV-2 following natural infection” while technically true (it’s a novel virus, so we’ve not had time to demonstrate lasting immunity) is misleading if people interpret that as meaning “it’s unlikely that there will be lasting immunity”. The Le Bert et al Singapore study of SARS-CoV-1 survivors published in Nature found that their T cells were able to react to the nuceocapsid protein of SARS-CoV-2, seventeen years after their infection.

T cell immunity looks like it may be more important than antibodies for SARS-CoV-2, with roughly 30% of the population likely already immune in this way through exposure to other coronaviruses. This in turn would lower the herd immunity threshold considerably, and it has been suggested that the practical herd immunity threshold is as low as 10-20%, which is consistent with what we’re seeing so far. There’s a discussion of these topics in the BMJ here: https://www.bmj.com/content/370/bmj.m3563

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dogood52
dogood52
October 26, 2020 7:18 am

I’m also a little disappointed by the Doc’s analysis. First of all, a trip to worldometers.com and sorting countries by deaths per million shows that the whole slam on Sweden being a failure is a data cherry-picking exercise. If anything, the chart says that despite myriad different approaches used by governments in terms of lockdowns, the overall results are hard to entangle. Sweden has more deaths than Canada, while other countries with more lockdown than Sweden have more deaths. Sure Arizona or any hot spot can connect lockdowns to reduced infection rates. That is just simply not the point of the Barrington Declaration. The comebacks to the Barrington Declarations that are cited fail to address the central premise: at what point is the cure worse than disease? When you put infectious disease experts in charge of the government, or publishing in The Lancet, they are going to discuss and be biased towards their usual measures of success. The Gates Foundation tracked the unemployment rate against “deaths of despair” (suicide and related deaths) against the unemployment rate resulting the 2009 recession. A remarkable correlation, and the absolute size of the numbers compared with covid death projections for doing nothing, pleads with us all to not dismiss the knockoff effects of the lockdown, and challenge our government and medical advisors to be smarter about this, and incorporate negative health effects of lockdowns into their health of the nation calculations and news conferences. More time should be spent there instead of on telling us to wear masks while having sex and cancelling Halloween in Toronto. The science may not lie, but how we interpret it and what policies we enact as a result, can vary wildly. And… it will all impact our investments, so useful discussion, thanks for offering it up!

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John L. Bengfort, M.D.
Irregular
John L. Bengfort, M.D.
October 26, 2020 7:51 pm

I couldn’t disagree more with your perspective on “The Great Barrington Declaration,”, looking at it from my physician’s perspective. I do admire your reasoned presentations of the past and understand your view, but we are left trying to decipher data which have been highly politicized. I do not think medicine will recover from it. Thank you, and keep writing.

vishalg
vishalg
October 28, 2020 2:46 pm

Thanks for an extremely well-timed and illuminating article. I fear it will be received poorly because facts, science, data are all second to ideological biases.

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Ron Serandos
Member
Ron Serandos
November 14, 2020 10:40 pm

Thanks again Doc. I wonder if you could add 1 more topic to your planned next article. I don’t know if anyone else would be interested, but I don’t understand the details of how the virus spreads among people. Outdoors and brief exposure is apparently very unlikely to infect a new person. Indoors and lengthy exposure is seems very likely (assume no masks in both cases to not muddy the water).

Is there some sort of critical mass of virus count required to infect or is it merely a statistical thing that with the brief outdoor exposure a person is unlikely to inhale even a single virus? So, is there any information on this? If I inhale a small amount of the virus, does it just die out before it can do any harm even though I have no immunity? I find it unsettling how little useful information we are getting from our federal government.

One final comment: To state the obvious; with a safe and incredibly effective vaccine so close to being available, we all should be extremely motivated to avoid exposure while we wait. For those in the most vulnerable categories, the wait is likely measured in weeks IMO. Wouldn’t it be a shame to contract Covid-19 just before you could have been vaccinated.

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