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Effectiveness of Masks
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Aug 22, 2020 12:38:08   #
Delderby Loc: Derby UK
 
rehess wrote:
That is a matter open to discussion. Doctors are usually most interested in what factors caused a person to no longer be alive. If influenza put stress on the heart, they died directly of heart disease, but influenza is what caused them to die at this moment. Similarly, we have learned that Covid can cause inflammation and blood clots, so it has additional ways to cause death earlier than would otherwise be the case.


Covid does cause the deaths that it has been blamed for. The virus can cause inflamation in all organs of the body including the brain. Problems caused in the brain may not become evident for months or years after apparent recovery.

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Aug 22, 2020 12:46:00   #
Delderby Loc: Derby UK
 
pendennis wrote:
Did you just make up that one, or did someone help you.

I can "see" just fine, and my faculties are all in place. However, I seriously doubt that you've ever read anything beyond "Dick and Jane".


Ha ha - you are now really showing yourself up for what we see you are. There's only one Dick (or is it Jane?) in this conversation and it's not me.

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Aug 22, 2020 13:28:59   #
srt101fan
 
pendennis wrote:
It isn't just "semantics"; it's the entire politicization of the disease.

To cite your example, if a person dies of a massive heart attack, and the car then crashes, the death is attributed to a heart attack, and not a car accident. Deaths associated with car crashes are labeled that, and only those deaths are counted toward the total traffic crash deaths.


There is heavy politicization (on both sides) but I don't see any relevancy to my comment. I still think a lot of it is semantics. And why bring up a heart attack death that causes a car crash? Totally irrelevant.

You say "Deaths associated with car crashes are labeled that, and only those deaths are counted toward the total traffic crash deaths." That was my whole point. We keep statistics of "deaths associated with car crashes" without regard for what they died of. Why can't we do the same with coronavirus deaths?

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Aug 22, 2020 13:35:24   #
rehess Loc: South Bend, Indiana, USA
 
srt101fan wrote:
There is heavy politicization (on both sides) but I don't see any relevancy to my comment. I still think a lot of it is semantics. And why bring up a heart attack death that causes a car crash? Totally irrelevant.

You say "Deaths associated with car crashes are labeled that, and only those deaths are counted toward the total traffic crash deaths." That was my whole point. We keep statistics of "deaths associated with car crashes" without regard for what they died of. Why can't we do the same with coronavirus deaths?
There is heavy politicization (on both sides) but ... (show quote)

Because, as you yourself have said, this subject is "highly politicized".

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Aug 22, 2020 13:37:31   #
pendennis
 
Kmgw9v wrote:
Don’t condescend to me.

If the individual had not contracted the virus, they would still be ALIVE even though their heat stopped, or whatever other physical weakness was attacked and destroyed by the effects of the virus. The virus is the cause of death.
You are skirting the issue with the logic of a child.


Learn to think in a straight line, and quit making unsupported leaps of logic.

It is a non sequitur to assume that because a person tested positive for COVID, that the cause of death is necessarily related to COVID. There numerous false positive tests for COVID, so hanging your argument on that canard just doesn't make the logic muster.

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Aug 22, 2020 13:40:55   #
rehess Loc: South Bend, Indiana, USA
 
pendennis wrote:
?Learn to think in a straight line, and quit making unsupported leaps of logic.

It is a non sequitur to assume that because a person tested positive for COVID, that the cause of death is necessarily related to COVID. There numerous false positive tests for COVID, so hanging your argument on that canard just doesn't make the logic muster.

You are jumping to the conclusion that deaths are automatically attributed to Covid if it is present.

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Aug 22, 2020 14:02:53   #
pendennis
 
srt101fan wrote:
There is heavy politicization (on both sides) but I don't see any relevancy to my comment. I still think a lot of it is semantics. And why bring up a heart attack death that causes a car crash? Totally irrelevant.

You say "Deaths associated with car crashes are labeled that, and only those deaths are counted toward the total traffic crash deaths." That was my whole point. We keep statistics of "deaths associated with car crashes" without regard for what they died of. Why can't we do the same with coronavirus deaths?
There is heavy politicization (on both sides) but ... (show quote)


COVID is already named as a secondary cause of death if it is indeed involved. However, the immediate cause of death is always the failure of one of the body's systems - heart, pulmonary, renal, gastrointestinal, etc. The tertiary causes would be those underlyers which pre-existed the systems failure - diabetes, various heart ailments, COPD, etc.

If a person has diabetes, for instance, it can cause a host of diseases such as macular degeneration, renal failure, gastrointestinal, and neural problems, among others. Thus, if one died of renal failure, it would be the immediate cause, a secondary cause could be COVID, or some other ailment; the tertiary cause would be diabetes.

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Aug 22, 2020 14:15:52   #
pendennis
 
rehess wrote:
You are jumping to the conclusion that deaths are automatically attributed to Covid if it is present.


I did not state, nor imply that. The ASSumption by others, is that COVID caused the death of people already ill with another malady. That is not true. A person who dies of pulmonary failure, may have tested positive for COVID; but it does not follow that COVID is THE secondary cause of death. There are enumerable instances of false positives for COVID, so one can't positively state that COVID was a secondary cause. Without a complete and total post-mortem examination, and blood testing, it's only speculation as to what the cause of death is.

Here's an unrelated aside as to cause of death. My bother, who was 57 (in 2006) when he died, complained of shoulder pain in the days preceding his death. When he collapsed, the EMT's took him to the local ER where the doctor ruled that he died of a myocardial infarction. I requested an autopsy, mostly for genetic purposes, and the autopsy revealed that he died of an abdominal aortic aneurysm, not an MI. It made no difference in his death, but it provided our family with valuable genetic health information. I put his cause of death in my own medical history, so my primary care doctor has another tool for my health profile.

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Aug 22, 2020 14:23:53   #
rehess Loc: South Bend, Indiana, USA
 
pendennis wrote:
I did not state, nor imply that. The ASSumption by others, is that COVID caused the death of people already ill with another malady. That is not true. A person who dies of pulmonary failure, may have tested positive for COVID; but it does not follow that COVID is THE secondary cause of death. There are enumerable instances of false positives for COVID, so one can't positively state that COVID was a secondary cause. Without a complete and total post-mortem examination, and blood testing, it's only speculation as to what the cause of death is.

Here's an unrelated aside as to cause of death. My bother, who was 57 (in 2006) when he died, complained of shoulder pain in the days preceding his death. When he collapsed, the EMT's took him to the local ER where the doctor ruled that he died of a myocardial infarction. I requested an autopsy, mostly for genetic purposes, and the autopsy revealed that he died of an abdominal aortic aneurysm, not an MI. It made no difference in his death, but it provided our family with valuable genetic health information. I put his cause of death in my own medical history, so my primary care doctor has another tool for my health profile.
I did not state, nor imply that. The ASSumption b... (show quote)

As far as I am aware, only secondary or primary causes of death are counted in my state - I have no idea how they are counted in your state. These are figured out from testing and symptoms - we don't have the resources for autopsies in most cases.

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Aug 22, 2020 17:44:23   #
jerryc41 Loc: Catskill Mts of NY
 
David Martin wrote:
Incorrect.

Let's "clear the air" regarding masks and valves.

N95 and KN95 describe the protective efficiency to the wearer, based on the material the mask is made of, and are available in various versions, both with and without exhaust valves.

The image below shows N95 masks offered by 3M, and comments from 3M's website:

A has an exhaust valve. 3M calls it a "general purpose particulate respirator", and recommends use in Agricultural, Commercial Buildings, Construction, Design & Construction, Food Processing, Food Safety, General Manufacturing, Heavy Infrastructure, Industrial Maintenance, Mining, Oil & Gas, Transportation. Note that "Health Care" is not listed.

B does not have an exhaust valve. 3M calls it a "general purpose particulate respirator", and recommends use in Food Processing, Food Safety, General Manufacturing, Marine, Mining, Oil & Gas, Transportation. Note that "Health Care" is not listed.

C does not have an exhaust valve. 3M calls it a "healthcare particulate respirator and surgical mask". Recommended industry: Health Care.

General purpose masks are intended to provide protection for the wearer.
Masks for Health Care are intended to provide protection both for the wearer and for others exposed to the wearer.
Incorrect. br br Let's "clear the air" ... (show quote)


Right. So don't wear an N95 mask with an exhaust valve in public.

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Aug 22, 2020 17:57:11   #
pendennis
 
rehess wrote:
As far as I am aware, only secondary or primary causes of death are counted in my state - I have no idea how they are counted in your state. These are figured out from testing and symptoms - we don't have the resources for autopsies in most cases.


Michigan is the same. However the only reporting done publicly is that there are/were "X" numbers of deaths from COVID, and that there are/were "Y" number of COVID cases, neither of which provides anyone a great deal of information. First, deaths are not accurately reported, since not all associated deaths are known. Second, reported cases are not total cases; no one will ever know how many cases occurred, since testing will never get close to 100% of the exposures, and even testing is fraught with false positives, and by the same logic, false negatives. As an example, the most closely watched groups are pro sports teams, since they work in a fairly closed environment. They have numbers of reported positives, which after reporting, turn out to be false positives.

As of June there are up to 20% false false negatives (testing errors) in the general population. As testing goes up, false positives also go up in a linear fashion. The fact that hospitalizations and mortality are down while testing results are going up, shows that the virus is not as lethal as first thought.

The best estimates seem to be those which correlate the actual reported cases to the total viral penetration in the population. Viruses spread, regardless the precautions taken, to a percentage of the total population. The best estimates have been somewhere in the 70%-80% penetration rate. After that a virus ceases to be effective for any number of reasons (remember, we don't have a preventative vaccine). People have some natural immunity, or the virus loses its ability to penetrate the body, or folks develop immunities based on exposure. There were studies done by UCLA, Stanford, and others where people were physically visited, data gleaned, and then extrapolated, using computer models. Separate independent studies revealed similar data; that the virus penetration was 40x-50x the reported penetration. If the modeling is correct, then the penetration will approach nearly 250 million people. That makes the death rate around .08%.

Mathematical modeling is all that's available. No one will ever know how many folks actually have/had the virus, those who are/were asymptomatic, and those who died with undiagnosed COVID symptoms which may have contributed to death.

The virus has a 99.9% survival rate, slightly better than influenza, and we already have a number of influenza vaccines available.

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Aug 22, 2020 18:00:42   #
rehess Loc: South Bend, Indiana, USA
 
pendennis wrote:
Michigan is the same. However the only reporting done publicly is that there are/were "X" numbers of deaths from COVID, and that there are/were "Y" number of COVID cases, neither of which provides anyone a great deal of information. First, deaths are not accurately reported, since not all associated deaths are known. Second, reported cases are not total cases; no one will ever know how many cases occurred, since testing will never get close to 100% of the exposures, and even testing is fraught with false positives, and by the same logic, false negatives. As an example, the most closely watched groups are pro sports teams, since they work in a fairly closed environment. They have numbers of reported positives, which after reporting, turn out to be false positives.

As of June there are up to 20% false false negatives (testing errors) in the general population. As testing goes up, false positives also go up in a linear fashion. The fact that hospitalizations and mortality are down while testing results are going up, shows that the virus is not as lethal as first thought.

The best estimates seem to be those which correlate the actual reported cases to the total viral penetration in the population. Viruses spread, regardless the precautions taken, to a percentage of the total population. The best estimates have been somewhere in the 70%-80% penetration rate. After that a virus ceases to be effective for any number of reasons (remember, we don't have a preventative vaccine). People have some natural immunity, or the virus loses its ability to penetrate the body, or folks develop immunities based on exposure. There were studies done by UCLA, Stanford, and others where people were physically visited, data gleaned, and then extrapolated, using computer models. Separate independent studies revealed similar data; that the virus penetration was 40x-50x the reported penetration. If the modeling is correct, then the penetration will approach nearly 250 million people. That makes the death rate around .08%.

Mathematical modeling is all that's available. No one will ever know how many folks actually have/had the virus, those who are/were asymptomatic, and those who died with undiagnosed COVID symptoms which may have contributed to death.

The virus has a 99.9% survival rate, slightly better than influenza, and we already have a number of influenza vaccines available.
Michigan is the same. However the only reporting ... (show quote)

The reports I have heard are more 'conservative' than that. Indiana did some truly random testing, which told them that about 40% of those infected don't have symptoms. Even if the infections are 10 times the known rate, we are a long way from 70% penetration.

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Aug 22, 2020 21:24:51   #
Delderby Loc: Derby UK
 
pendennis wrote:
Did you just make up that one, or did someone help you.

I can "see" just fine, and my faculties are all in place. However, I seriously doubt that you've ever read anything beyond "Dick and Jane".


On reflection our heated exchange is regrettable - I hope we are both big enough to get passed it. Feelings will run high in this pandemic - especially among high risk shielders like myself. Keep safe, Del.

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