2019-nCoV human-to-human transmission proven

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ABC2019
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Re: The human-to-human transmission of 2019-nCoV is proven




by ABC2019 » 30/03/20, 21:33

the two Duponts are having fun as they can it seems ...
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Re: The human-to-human transmission of 2019-nCoV is proven




by GuyGadebois » 30/03/20, 21:42

ABC2019 wrote:the two Duponts are having fun as they can it seems ...

At least we have fun. : Cheesy:
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Re: The human-to-human transmission of 2019-nCoV is proven




by Christophe » 31/03/20, 01:18

5 questions about coronavirus: https://www.lunion.fr/id142532/article/ ... oronavirus

Five key things we continue to ignore or misunderstand about the SARS-CoV-2 virus and the disease it causes, Covid-19.

Why benign for some, very serious for others?
The extreme amplitude of the severity of the symptoms never ceases to amaze: why here the Covid-19 produces no or few symptoms (80% of cases according to the WHO) while in some, it induces a high fever, even fatal pneumonia?


"Research since February 2020 shows that the clinical spectrum of this disease can be very heterogeneous," reports Leo Poon of the Hong Kong Faculty of Medicine. During the peak of the epidemic in China, he compared, with a Chinese team from Nanchang, people with mild illness to severe patients. The results were published in the British medical journal The Lancet.

What do we learn? That severely affected people are "significantly older" than those with mild illness and that the concentration of virus in their samples is "about 60 times greater" than in those with mild illness.

Is it the result of a poorer immune response due in particular to age, or the consequence of exposure to higher doses of virus during contamination?

Work on a different virus, measles, has shown that the severity of the disease is correlated with the dose of initial exposure to the virus. It is unclear whether the same is true for the Covid-19.

Suspended in the air?
It is known that coronavirus is transmitted by physical contact and the respiratory tract. For example by the droplets of saliva expelled when a patient coughs.

Can it circulate in suspension in the air like the seasonal flu? The question is not settled.

An American study shows that the new coronavirus can survive in the laboratory for three hours in the form of particles in the air. But it is not known whether this ability is important for the transmission of the disease.

“Is the virus present in the environment, does it persist for a long time in the air or on inert surfaces. Well, we don't know. We know we can find the virus, but we don't know if this virus is infectious, ”comments Professor Karine Lacombe, head of the infectious diseases department at Saint-Antoine hospital (Paris).

How many infected?
How many have already caught the virus? Aside from the few countries that have rapidly implemented aggressive screening policies, such as South Korea and Germany, knowledge of the number of infected people is very approximate.

Thus, the British government evaluated the cases in the country on March 17 at 55 when officially less than 000 had been tested positive.

Having a clear idea of ​​the extent of the epidemic is crucial to isolating and caring for virus carriers. And, in a second step, it will become precious to know who has already caught the virus and is a priori already immune. This will only be possible with the arrival of a new generation of tests, called serological tests, which will target the detection in the blood of the immune signature left against SARS-CoV-2.

Weather sensitive virus?
Will the Covid-19 fade with the arrival of sunny days? It is a possibility but not a certainty, say specialists. Respiratory viruses of the seasonal flu type are more stable in cold and dry weather, which favors their transmission in winter.

A recent American study, from Havard Medical School, points out that "the only weather changes will not necessarily lead to the decline of Covid-19 cases without the implementation of major health interventions".

Why are children spared?
Children are much less prone to Covid-19 than adults. And if they develop symptoms, they are usually mild.

A Chinese study published in the journal Nature shows that out of ten children studied, affected by Covid-19, none developed a severe form, their symptoms being limited to sore throat, cough and mild fever.

According to this research, children living with sick people are two to three times less likely to get the virus than adults. Why ? We do not know. The same characteristic was noted for the SARS virus in 2002-2003.
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Re: The human-to-human transmission of 2019-nCoV is proven




by Janic » 31/03/20, 09:13

by ABC2019 "30/03/20, 21:33
the two Duponts are having fun as they can it seems ...
at least they have a P and not a C in their names. : Cheesy: It's fun! : Cheesy: : Cheesy:
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Re: The human-to-human transmission of 2019-nCoV is proven




by ABC2019 » 31/03/20, 09:25

it's just because i wanted to be polite : Mrgreen:
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Re: The human-to-human transmission of 2019-nCoV is proven




by Janic » 31/03/20, 09:35

Why benign for some, very serious for others?
The extreme amplitude of the severity of the symptoms never ceases to amaze: why here the Covid-19 produces no or few symptoms (80% of cases according to the WHO) while in some, it induces a high fever, even fatal pneumonia?
Why are children spared?
Children are much less prone to Covid-19 than adults. And if they develop symptoms, they are usually mild.

A Chinese study published in the journal Nature shows that out of ten children studied, affected by Covid-19, none developed a severe form, their symptoms being limited to sore throat, cough and mild fever.

According to this work, children living with sick people are two to three times less likely!
to catch the virus only from adults. Why ? We do not know. The same characteristic was noted for the SARS virus in 2002-2003.


Finally real good questions asked.
If there had been a vaccine injected into children from birth, this miracle would have been attributed to it. But there, no bowl, no vaccines, no drugs, and the children are doing better than with. Go figure it out? However there is no miracle because the same phenomenon existed during measles, where naturally affected children very quickly developed their immunity hence the consideration that it was a mild disease at the time. But the phenomenon worsened from the introduction of vaccines which moved this pathology from childhood to babies and adults.
So let's prophesy that if they discover a VOC vaccine, the same phenomenon will happen and that children will be victims like old adults and middle ages too. So let's wait until next year and its future epidemic to see. : Cheesy: : Cry:
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Re: The human-to-human transmission of 2019-nCoV is proven




by Christophe » 31/03/20, 09:51

Or divine selection? Simpler right?
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Re: The human-to-human transmission of 2019-nCoV is proven




by Janic » 31/03/20, 11:15

Or divine selection? Simpler right?
it's the same thing. it's all about language and words used! Saying god, chance, nature, fatality, determinism and other formulations, if we attribute to each of these designations a single and same action, it is that we only hide behind these words, exactly
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Re: The human-to-human transmission of 2019-nCoV is proven




by Ahmed » 31/03/20, 12:01

A small local overview (Besançon) of the work of general practitioners (the words are a little watered down compared to reality):
https://www.lapressedudoubs.fr/medecins ... -covid-19/
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Re: The human-to-human transmission of 2019-nCoV is proven




by pedrodelavega » 31/03/20, 12:11

Janic wrote:But there, no bowl, no vaccines, no drugs, and the children are doing better than with.
No, children do not do better without medoc rather than with.
Children are just much less affected and / or much less severely (They are looking for why). But those who are, are treated, if necessary, like the others with medication, resuscitation, etc.
"Wong et al provide in the journal Pediatrics a clinical description of 2143 pediatric cases (including 731 confirmed cases). 94 children were asymptomatic (systematic samples due to contagion). In 94% of cases the disease was mild (from asymptomatic to moderate). 112 severe cases (respiratory distress with oxygen saturation <92%), 60% were less than 5 years old and 30% less than 1 year old and among the 13 critical cases (ARDS and / or organ failure) 7 was less than 1 year old. A child of 14 years old died. There are no data on possible comorbidities in children. "
https://pediatrics.aappublications.org/ ... 2.full.pdf

Janic wrote:However, there is no miracle because the same phenomenon existed during measles, where naturally affected children very quickly developed their immunity, hence the consideration that it was a mild disease at the time.
At the time, measles was a child killer:
"This disease characterized by the eruption of red spots on the skin was, before the arrival of vaccines in the 1970s, a formidable killer of children (7 to 8 million deaths estimated per year in the world)."
https://www.sciencesetavenir.fr/sante/l ... nde_133015

It still wreaks havoc today:
"The killer disease of children has become almost endemic in several provinces of the Democratic Republic of Congo (DRC). According to a statement from the World Health Organization (WHO), since the beginning of the current year , over two hundred and fifty thousand suspected cases and over five thousand deaths, mainly among children under 5, have been registered. "
http://www.adiac-congo.com/content/camp ... s-denfants

Janic wrote:But the phenomenon worsened from the introduction of vaccines which moved this pathology from childhood to babies and adults.
It is false, it is even the reverse:
"Why is this wrong?
-Because if we compare different countries, we see that the better the immunization coverage, the more measles affects the youngest children on average.
-This is normal, since if everyone is vaccinated the only exposed are young children (less than 1 year in France, less than 6 years in Sweden).
-Because if we compare the same country at different times (France 2018 and France 2011), we see exactly the same thing. "

https://atlas.ecdc.europa.eu/public/ind ... UrFrV-rHsk
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