Coronavirus-COVID-19: How the virus is transmitted

Read this article and you'll understand why so many people died for COVID19
Unfortunately, Coronavirus-COVID-19 is not visible.
We know it spreads through saliva.

The saliva

Surely you happened to see drops of saliva inadvertently coming out of the mouth of a talking person.
We only see drops of a certain magnitude.
In fact, each of us, while talking, emits a large amount of very small saliva droplets.

Coronavirus-COVID-19: Explanatory image of a sternuto.

We photographed a sternum to get an idea of the amount of saliva emitted.
During a normal conversation the saliva droplets arrive at a distance of between one and four meters.
During a lay-off, the air output speed can reach 160 km/h, projecting saliva up to considerable distances.

Thousands of pairs of viurs and bacteria are contained in each droplet of saliva.
If we get hit by one of these droplets, the viruses contained in the saliva enter our body through our mouth, nose, eyes.

Wherever saliva droplets are deposited, with moisture contained in the saliva itself, they can ensure the survival of viruses and bacteria even for a long time.

Humidity contained in our breath

In winter you have certainly breathed on a mirror or glass noting that a veil of tiny droplets of steam was deposited.
This moisture is contained in the air that we exhale, and how saliva contains viruses and bacteria present in our body.

This vapor is easily visible even when you are in a very cold environment.
To make the visibility of the air we exhale more persistent, it is enough to add smoke to it, for example by smoking a cigarette.

Coronavirus-COVID-19: Observing a smoker we see how the air that emits spreads.

After a few seconds the smoke is no longer visible because it disperses into the environment.
But the case is different if you enter in a smoking room.
The smoke is very visible and linger for hours.
In the same way the air that we exhale remains, even if we are not smoking, especially if we are in a crowded environment like a bar or a subway.
The only difference is that it is not visible, but still contains viruses and bacteria.

Coronavirus-COVID-19: Observing a valley with almost immobile haze.

We might think that the air emitted disperses quickly.
But let's look at a valley with haze banks.
We see that these moisture banks remain almost in the same position for hours.

If one of these moisture banks contains a virus, it will remain in that position for a long time, like the moisture that makes it visible.

In accordance with these considerations we can say that the virus spreads with saliva up to a distance of between one and four meters. With a erth can go even further.
The air we emit can last even hours before it disperses completely, as is the case with haze banks and clouds.
So we have to ask ourselves how long can the virus survive in the saliva droplets and steam we emit?
This is the subject of the trial documented below.

The thoughtful position of the authorities

As we all know, from many years the Chinese have been routinely using protective masks to limit the spread of the virus, before SARS, now COVID19.
For almost ten years we have been used to seeing the Chinese with masks, often even in Europe.
The World Health Organization has consistently recommended and stressed that we does not use protective masks since the outbreak began, unless we're infected.
But as everyone knows, during the incubation period or if we are asymptomatic carriers, we can have the virus without knowing it and then spread it everywhere,

Today, however, we have a million infected and more than one hundred thousand dead.

The Ministry of Health French decided today, 4 April 2020, to encourage the use of masks for the whole population, announcing that it could also make them mandatory.

Coronavirus-COVID-19: The WHO World Health Organization discourages the use of the mask.

The WHO World Health Organization is still thinking about masks and in the meantime discourages their use.
We're 90,000 dead. The Chinese have been using masks for ten years.
How many people have to die before the Chinese example is followed, and now also the French example?
How much longer does the World Health Organization have to think silently to advise and allow its use?

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