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COVID-19 math


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2020 Apr 19, 6:47am   872 views  19 comments

by Al_Sharpton_for_President   ➕follow (5)   💰tip   ignore  

1/3 of a randomly sampled population in Chelsea, MA test positive for antibodies to COVID-19. Population of MA = 6.9 million. Extrapolating, 2.3 million are positive for exposure to COVID-19. Virus fatalities in MA to date = 1,400. Infection fatality rate (IFR) = 1,400/2.3 million = 0.06%.

A recent Stanford U. study estimates that between 2.5% - 4.2% of Santa Clara, CA residents are positive for exposure to the virus. Population of California = 39.5 million. Extrapolating, between 1 million - 1.7 million have been infected so far. California fatalities to date = 1,072. Infection fatality rate (IFR) is between = 1,072/1 million = 0.01% - 1,072/1.7 million = 0.06%.

IFR for the common flu = 0.1%.

Comments 1 - 19 of 19        Search these comments

1   WookieMan   2020 Apr 19, 7:28am  

You have a link? Not disputing it, but it would shut some up here and we can get onto other shit that they're wrong on...
3   Al_Sharpton_for_President   2020 Apr 19, 7:42am  

WookieMan says
You have a link? Not disputing it, but it would shut some up here and we can get onto other shit that they're wrong on...


Quite a few Stanford antibody study stories: https://ktla.com/news/california/stanford-antibody-study-estimates-covid-19-infected-at-least-50-times-more-people-than-testing-identified-in-santa-clara-county/

Quite a few Chelsea, MA antibody study stories: https://www.bostonglobe.com/2020/04/17/business/nearly-third-200-blood-samples-taken-chelsea-show-exposure-coronavirus/

Flu fatality rate: https://www.health.com/condition/cold-flu-sinus/how-many-people-die-of-the-flu-every-year

The issue is an emotional one - do we want to see primarily elderly folks die quickly or, as with the flu, over time.
4   Onvacation   2020 Apr 19, 9:56am  

willywonka says

The issue is an emotional one - do we want to see primarily elderly folks die quickly or, as with the flu, over time.

I'd prefer the quick death.
5   Ceffer   2020 Apr 19, 10:55am  

That makes three of these immunologic studies so far, projecting less than 0.1 percent fatality rate. Of course, there are those believe the flu rates are also purposely exaggerated in order to sell flu vaccine.

More studies coming out in next couple of weeks.
6   WookieMan   2020 Apr 19, 12:12pm  

logic says
Santa Clara county had the highest infection rate at the start of this in CA. I don't think extrapolatin from that county really gives you an accurate picture of the whole state. A virus spreads from one area to another, one would need data from different parts of a state to do any sort of accurate extrapolation.

....And demographics, population density, underlying conditions, and on and on. There's simply not enough data to justify the reaction. The data we do have tells a pretty clear picture. The "experts" say as much. If you're above 50-60, take pills for anything, smoke, live in a city or nursing home, your best bet is to stay home and don't have people visit.

Get groceries delivered. If you have caretakers, make sure they're sanitized and wearing masks when dealing with you. If you have someone in this situation, make sure the facility is taking all measure to do this. Deaths are slashed by 80% if we just do that alone with no vaccine. It's not as dire as the media is making it out to be.
8   PeopleUnited   2020 Apr 19, 12:34pm  

WookieMan says
It's not as dire as the media is making it out to be.


+1000
9   Ceffer   2020 Apr 19, 1:21pm  

Tim Aurora says
There is anecdotal evidence that the infection rate is indeed much higher

'Anecdotal' and 'evidence' shouldn't be used in the same phrase, but for you, I'll make an exception.
10   Ceffer   2020 Apr 19, 1:25pm  

We would expect our resident agitprop repeating stations to be clinging to any leaky raft of manipulated, exaggerated, forged, or falsified Covid deaths, without apology or retraction.
11   Al_Sharpton_for_President   2020 Apr 19, 1:30pm  

Tim Aurora says
There is anecdotal evidence that the infection rate is indeed much higher
You don't need a weatherman to know which way the wind blows.
12   Ceffer   2020 Apr 19, 1:38pm  

Tim Aurora says
I agree . It is an oxymoron

Ceffer says
'Anecdotal' and 'evidence' shouldn't be used in the same phrase, but for you, I'll make an exception.

Don't do that. You'll give me a heart attack.
13   Ceffer   2020 Apr 19, 1:51pm  

Strange, they never published such reservations with the 'garbage in, garbage out' tests and techniques they have been using to fan the flames so far. They are only 'rigorous' with things that don't fit the narrative?
14   HeadSet   2020 Apr 19, 3:06pm  

Don't do that. You'll give me a heart attack.

And it will be counted as a Covid-19 death....
15   Al_Sharpton_for_President   2020 Apr 19, 3:38pm  

logic says
willywonka says
1/3 of a randomly sampled population in Chelsea, MA test positive for antibodies to COVID-19
willywonka says
2.5% - 4.2% of Santa Clara, CA residents are positive for exposure to the virus.


Hmmmmm, if this extrapolation technique works so well then why doesn't santa Clara have the same antibody/exposure rate as Chelsea?
Why such regional variation in flu exposure? https://www.cdc.gov/flu/weekly/pdf/External_F1211.pdf
16   Ceffer   2020 Apr 19, 5:51pm  

HeadSet says
Don't do that. You'll give me a heart attack.

And it will be counted as a Covid-19 death....

Probably twenty or thirty.
17   Bd6r   2020 Apr 19, 9:54pm  

logic says
How many here have ever had to learn about error analysis?

Perhaps such knowledge would have been helpful also to officials and media who screamed about potential for trillions of deaths from COVID. But I now I am dreaming...they will never learn
18   WookieMan   2020 Apr 20, 5:38am  

PeopleUnited says
WookieMan says
It's not as dire as the media is making it out to be.


+1000

A few local sources are doing their job....

https://www.startribune.com/all-10-winona-county-virus-deaths-linked-to-care-facilities/569775292/

Minnesota has recorded 134 fatalities from COVID-19, and 97 of them were people who lived in long-term care settings, including nursing homes and other senior living and care settings, according to the daily update from the Minnesota Department of Health. Ten of Sunday’s 13 reported deaths involved people in long-term care.


WookieMan says
Get groceries delivered. If you have caretakers, make sure they're sanitized and wearing masks when dealing with you. If you have someone in this situation, make sure the facility is taking all measure to do this. Deaths are slashed by 80% if we just do that alone with no vaccine. It's not as dire as the media is making it out to be.


Not complicated. This virus wipes out old people places. 72% of the dead in the county cited were in old people places. Lock. Them. The. Fuck. Down. And this goes away. Give them money, healthcare for free, whatever. Open back up.
19   HeadSet   2020 Apr 20, 6:57am  

logic says
ThreeBays says
I'll just leave this here for the few who can think.


Poisson distribution, that really takes me back. How many here have ever had to learn about error analysis? I'm guessing not to many.


The only meat in that article is a measured 2 false positives out of 401 tests. I am no intellectual, but it seems "fishy" to me that a Poisson distribution is used (pun intended) to hunt for false positives, as if false positives is an "event occurrence." I would see Poisson used more to model something like calls that come in to a Taxi company (I am a bit biased here, as call forecasting is important where I work).

Maybe Marcus could add something here.

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