Emergence of a Deadly Coronavirus
I then extended that "3 day" doubling rate, ( which is apparently called a geometric progression, for which there is a formula but I don't understand it so I worked it out "by hand"; mathematicians please check my results; I may be wildly out ), for another 54 days, to the 3 May.
Your estimate of 3 day doubling rate is slightly aggressive. Let's take January 22, 2020 as start of outbreak (from the plot in https://www.worldometers.info/coronavirus/). Today is March 7, 2020. That is, 45 days have elapsed. The time constant D is given by:
2^(d/D) = 3524, or by inverting it, we get D=45*log(2)/log(3524)=3.8190619 days.
Plug D back into the other formula for half of the world population to get infected:
d = D * log(3.85e9/3524) / log(2) = 76.6 days.
That'll bring us to May 22, 2020. Hmm ... not much comfort, either.
Mystery of SQL Error still unsolved ...
Last edited by ouinon2 on 07 Mar 2020, 10:38 am, edited 1 time in total.
Thank you very much, Eikonabridge, for those awesome calculations!! !
According to the World Bank https://data.worldbank.org/indicator/SP.POP.65UP.TO.ZS : 8.5% of the world population is over 65. China is 11% over-65. But Europe, N. America ( Canada and the USA ), Australia, and Japan have much older populations, with percentages of over-65s ranging from 16% to 28%, making them particularly vulnerable to this virus.
If anything the rate of spread of coronavirus deaths is likely to go up.
But mostly I am totally stunned that the numbers of ill and/or dead could grow that fast. I didn't really quite believe Dr Whitty, the UK Chief Medical Officer when he said it would peak in June. I thought that would mean a very small epidemic! lol
And yes, the big big question is, what decisions are leaders going to be making about lives saved vs financial/economic costs.
Last edited by ouinon2 on 07 Mar 2020, 3:25 pm, edited 1 time in total.
IMHO the coronavirus threat can be controlled. You have to step out of the box a little to understand the process. In a way it falls under Engineering. When people are crammed close together in cruise ships, airplanes, buses, offices, hospitals, etc. the virus is spread from one person to the next rapidly. Much of the virus contamination occurs in an indoor setting. If you can properly control the indoor environment you can minimize the transmission rates. There are two ways to dramatically lower the infection rate in the indoor environment. These are to control the indoor relative humidity levels between 40 and 60 percent. The second is to destroy the ability of the virus to infect a person. One method is to use far ultraviolet light (UVC) to destroy the virus.
Both these techniques combined together IMHO will bring this pandemic to its knees.
You don't need to eliminate all the millions of virus cells floating around in a room but reduce the load substantially so that the human body will not be overwhelmed. The human body has an immune system that can, given enough time, generally build up antibodies capable of defending it from various viral attacks (otherwise the human race would have become extinct hundred of thousands of years ago). My neighbor was over the other day. He works for Roto-Rooter and is alway coming in contact with human excrement and human waste. He said ever since he began the job several years ago, he never gets sick anymore with the influenza. He attributes this to the fact that he is constantly exposed to a variety of germs and his body has as a result adapted. He never get a flu shot because he doesn't need one.
So the first step is to control the humidity level and that can be done hundreds of ways. The most common is to use a humidifier. Generally you cannot control something that you cannot measure. Therefore it is really important to have a digital temperature/humidity meter so you can measure indoor relative humidity. These are inexpensive unit that range around $10. Every home should have one.
The second step is to reduce the indoor viral load by using UVA light. This is done by modifying the ductwork in the HVAC system and inserting and sealing in a UVA light. But some homes do not have HVAC systems. Mine is an example because I heat my house with wood all winter. I have been doing it for 40 years. And I really like the warmth that my wood stove provides. But there are other methods to accomplish this. There are a variety of air purifiers on the market and some of them have incorporated UVA technology. These units normally purify a room rather than an entire house.
So I went out and ordered a small unit so I could experiment with it. Put an order in Amazon on Monday and it arrived on Friday. It is small enough that it could easily fit next to my desk at work and not blow a circuit breaker in the process.
It is a small little unit. I put a Coca-Cola glass next to it for size comparison. The unit includes an electrostatic collecting, ozone filter and activated carbon filter, powerful UV lamp and a negative ionizer. It uses very little electricity to operate - 600 milliamps. The fan is whisper quiet. I tried it out last night. I noticed that my breathing was a little better when I slept. I suspect that it reduced some of the smoke particles from the wood stove.
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Last edited by jimmy m on 07 Mar 2020, 1:35 pm, edited 2 times in total.

The guy with the grey jacket and yellow side stripes is the Industrial Bureau Deputy Director (Mr. Yang). While other countries give out political hot air, Taiwan has quietly cranked up its mask production capability to 8 million masks per day. In mid-April it is aiming at 13 million masks per day. Taiwan has a population of 24 million. It did so by ordering 60 new mask-making machines. It is ordering another 30 machines, at a price tag of US$3 million. So, each machine is about US$100k. What does this picture show? It shows government officials are hands on, down to the level of participating in physical labor. Military personnel was added to the round-the-clock production effort.
Every single confirmed patient in Taiwan has been treated in a negative-pressure isolation room. In US these rooms are call AIIR (Airborne Infection Isolation Room). In Europe they are known as HID (Highly Infectious Diseases) rooms. The Diamond Princess had 696 out of the 3,711 passengers and crew had tested positive for the virus. At this level, the airborne infection route cannot be discarded. That is, the virus doesn't simply just propagate via droplets. Negative pressure isolation rooms are a need. And US is way behind: the last number I saw (from 2017) was that US only had 400 AIIR rooms in the whole country. That's almost like a bad joke.
We installed that in our home about 6 years ago already. I am glad we did it.
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Italy saw a dramatic increase in the number of confirmed coronavirus cases today with a rise of 1,247 in a single day, the Civil Protection Department said in a statement.
The country now has a total of 5,883 cases.
The death toll also continues to climb with 36 fatalities reported on Saturday. The country has reported the most deaths outside of China, a total of 233.
Silvio Brusaferro, head of the Health Institute, said in a press conference that the majority of the deceased are male, over 80-years-old and suffered from other diseases.
Confirmed coronavirus cases in the US rise to 377
From CNN's Shawn Nottingham
There are 377 cases of the novel coronavirus in the United States, according to the US Centers for Disease Control and Prevention, as well as state and local governments.
According to the CDC, there are 49 cases from repatriated citizens from Wuhan (3) and the Diamond Princess (46). Twenty-one are from the Grand Princess.
According to CNN Health’s tally of US cases that are detected and tested in the United States through US public health systems, there are 307 cases in 29 states, bringing the total of coronavirus cases to 377.
This figure includes presumptive positive cases that tested positive in a public health lab and are pending confirmation from the CDC, and confirmed cases have received positive results from the CDC
Coronavirus outbreak continues to spread - CNN Live Updates
New York governor declares state of emergency
From CNN's Elizabeth Joseph
Gov. Andrew Cuomo has declared a state of emergency due to the coronavirus in order to have “a more expedited purchasing and testing protocol,” according to a press conference held this afternoon.
“I have officially done a declaration of emergency which gives us certain powers. We’re going to be doing purchasing and hiring more staff, especially to help local health departments that are very stressed," Cuomo said.
Cuomo added: "We have a more expedited purchasing and testing protocol and we’re going to be doing that."
US federal court operations altered by the coronavirus
The coronavirus is impacting the operations of some federal courts across the US.
The Ninth Circuit Court of Appeals, which hears cases from nine western states including Washington, as well as a district court in Washington state, which has seen at least 80 cases, have altered some of the procedures as the virus continues to spread.
The appeals court, which has four courthouses including one in Seattle, said it is cancelling all hearings involving multiple judges as well as non-case related meetings, scheduled for next week.
The court said in an order posted online it was taking this measure “in light of the concerns about community spread of the COVID-19 virus throughout” the region covered by it.
All scheduled oral arguments in all locations will go forward, the court said.
“Counsel who wish to appear remotely for any hearing may file a motion in that case for such relief,” the court said.
The appeals court said it would be assessing the situation early next week.
The Southern District of New York issued an order directing the Metropolitan Detention Center to screen all detainees prior to scheduled appearances at court.
“If the temperature is 100.4 or above, such detainees should not be produced and the Court, forthwith, be notified,” Chief US District Judge Colleen McMahon ordered Friday.
Amtrak cutting some train service between NY and DC as demand drops
Amtrak is making some changes to its schedule because of reduced demand from the coronavirus virus while altering some fees to accommodate travelers.
It announced three Acela trains which run between Washington, D.C., and New York will be suspended beginning Tuesday until the end of May.
“As we are experiencing some reduced demand for our service, we are making temporary adjustments to our schedule, such as removing train cars or cancelling trains when there is a convenient alternative with a similar schedule that will have minimal impact to customers” including the three temporary suspensions, Amtrak said in a statement.
The service also announced – as some airlines have already implemented – a waiving of change fees or on all existing or new reservations made before April 30.
Regarding the actual trains, Amtrak said it is enhancing its cleaning protocols by increasing the frequency of cleaning service on the trains and stations to multiple times a day and even on an hourly basis in some cases. Also it is increasing the use of disinfectants to wipe down handrails, doorknobs and surfaces.
NBA advises teams to prepare to play without fans due to coronavirus concerns
The National Basketball Association (NBA) has asked teams to begin making contingency plans if they have to play games without anyone in attendance as concerns about the spread of coronavirus increase.
In a memo, which CNN has obtained, the league advised teams to identify “actions required if it were to become necessary to play a game with only essential staff present.” Only the league office will decide if a game will be played without fans, media, and/or other typical game attendees.
Los Angeles Lakers all-star forward LeBron James said after the Lakers’ 113-103 victory against the Milwaukee Bucks on Friday that he wouldn’t play in an empty arena.
“Nah, that's impossible. I ain't playing. If I ain't got the fans in the crowd, that's what I play for. I play for my teammates, I play for the fans. That's what it's all about. If I show up to an arena, and there ain't no fans there? I ain't playing. So, they could do what they want to do," James said.
Coronavirus quarantine hotel collapses, trapping 70 people
A hotel building in south-eastern China's Quanzhou city collapsed Saturday night, according to the city government statement. Several state media, including People’s Daily, confirmed the hotel has been used as coronavirus quarantine center.
Around 70 people were trapped in the building and 33 people have been rescued from the debris by 9:30 p.m. local time, the statement said.
It is unknown if there are any fatalities and why the building was collapsed.
206 people test positive for coronavirus in the United Kingdom
A total of 206 people have tested positive for coronavirus across the United Kingdom, British health officials confirmed Saturday in a statement.
“21,460 people have been tested in the UK, of which 21,254 were confirmed negative and 206 were confirmed as positive,” the UK Department of Health and Social Care said, adding that two coronavirus patients have so far died.
The British government’s confirmation came shortly after an update from the Scottish health authorities, who announced that they have identified five new cases of coronavirus over the last 24 hours, bringing their regional total to 16.
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Bethlehem, yes, the Bethlehem has 19 people infected with Corona and is now completely quarantined. Bethlehem schools closed for a month. Anyone coming to Israel from New York, Washington or California will be immediately quarantined for 14 days.
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My best will just have to be good enough.
We (America) could learn from Taiwan and Bethlehem.
In future, they will be looked back on as examples of what to do to save people.
I admire those in power who make the difficult decisions to do what may upset (or outrage) some, but what is the surest way to save lives and stop the spread.
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Similarly, the UK is very poorly equipped, according to this comment under an article in The Independent reporting on two warning letters from senior/experienced Italian medics about the nightmarish situation in Italy:
== Numbers of critical care beds corrected for size of population (per 100,000 inhabitants) for European countries ==
Germany: 29.2 [ my insert; this might explain why they still have no deaths ]
Luxembourg: 24.8
Austria: 21.8
Belgium: 21.4
Lithuania: 15.5
Croatia: 14.7
Estonia: 14.6
Hungary: 13.8
**ITALY**: 12.5
Bulgaria: 11.6
France: 11.6
Czech Republic: 11.6
Cyprus: 11.4
Switzerland: 11
Spain: 9.7
Latvia: 9.7
Slovakia: 9.2
Iceland: 9.1
Norway: 8
Andorra: 7.1
Poland: 6.9
Denmark: 6.7
**UNITED KINGDOM**: 6.6
Iceland: 6.5
Slovenia: 6.4
Netherlands: 6.4
Finland: 6.1
Greece: 6
Sweden: 5.8
Portugal: 4.5
EUROPE AVERAGE: 11.5
Source:
https://link.springer.com/article/10.10 ... 012-2627-8"
Look at this hilarious video clip.
And compare it to what people in Taiwan do (this is from end of January):
There is no surprise that Taiwan's ranking in coronavirus cases keeps going down, while the number of cases of US keeps going up. Taiwan went from being the "second most dangerous place in the world" to #30. While US has climbed up to #10. No school closures in Taiwan, whereas US already has some school closures.
https://www.worldometers.info/coronavirus/
US, instead of telling white lies about masks not being useful, should instead crank up its production of masks. Sure, the private sector is worried about overproduction once the pandemic is over. But that's what governments are for. All the additional machines and raw materials in Taiwan are bought and owned by the government, so there is never a worry about the private sector losing money afterwards due to a decline in demand.
Last edited by eikonabridge on 07 Mar 2020, 9:15 pm, edited 2 times in total.
Please let go your stereotype.
https://en.wikipedia.org/wiki/Democracy_Index#Democracy_Index_by_country_2019
Taiwan is more democratic than Belgium, Italy and Greece. (US is #25. Taiwan is #31, not far behind.)
Taiwan and Singapore have authoritarian governments which are able to mobilise the population quicker than free democracies.
Some people wish to frame this coronavirus threat through the lens of politics, or blame and reparations, or conspiracy theory. Where does this save lives? That should be our focus. What are actual workable solutions. That is what counts at the moment. Everything else is dust in the wind.
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Author of Practical Preparations for a Coronavirus Pandemic.
A very unique plan. As Dr. Paul Thompson wrote, "This is the very best paper on the virus I have ever seen."
