The origin of the Covid and the new clues that again point to a leak from the Wuhan laboratory

• Health This is how the WHO investigates the origin of the coronavirus without ruling out the laboratory leak

The pendulum of the search for

moves with increasing force towards the hypothesis of a leak from a Chinese laboratory - in all probability, the Wuhan Institute of Virology - where experiments were carried out to manipulate strains. viral.

It is almost certain that the irrefutable proof that would allow us to demonstrate with certainty that the Covid-19 virus came from an animal market or, by mistake - nobody believes in an attempt to produce biological weapons - from a laboratory, we will never find.

But

, which was already circulating in 2020 and seemed ruled out, has been greatly strengthened in recent weeks.

Two and a half years ago, the main promoter of the thesis of the intervention of a human hand was then President Trump who, with his taste for words that resound and his tendency to treat even the most delicate topics as geek phenomena, had begun to call Covid -19

(flu means flu in English, editor's note).

His willingness to politicize the issue made many, including scientists, back off.

Yet even then there were those, such as the head of the Atlanta CDC at the time, Robert Redfield, who gave credence to the lab error hypothesis.

In February 2021, the WHO, the World Health Organization itself, tried to bury this issue, describing the hypothesis of human intervention as extremely unlikely.

But in mid-2022, the planetary health authority also changed course, inviting a thorough investigation of the hypothesis of the laboratory accident.

More recently,

, "manufactured" virus hypothesis .

The first is the "interim" report from a Republican member of the Senate Health and Education Committee.

The document, presented last Thursday and signed by Senator Richard Barr, a moderate conservative who two years ago was among the few in his party who voted in favor of impeaching Trump and who will leave Congress in two months, is the the result of a lengthy bipartisan investigation.

For now, however, Democrats have backed out, though they say the collaboration will continue and the final document could be common.

The report contains multiple

that allowed the escape of a manipulated virus.

In particular, it seems unlikely that two teams of Army scientists have managed to develop a vaccine, ready in February 2020, in less than two months.

According to the experts who participated in the work, it is much more likely that the team had access to the genomic sequence of the virus since November 2019. Therefore, the Chinese would be responsible for the oversight, even if the market trail is not entirely excluded.

The second passage is a 40-page essay researched by a team of journalists from Vanity Fair and ProPublica.

They worked for five months making sure that all the communications that came out of the Chinese laboratories and the interactions with the Central Committee of the Communist Party were analyzed by experts who speak good Mandarin and know how to decipher the opaque and grandiose language of official political communication.

Many clues point to the fact that

for which the CCP leadership was mobilized and, probably, Xi Jinping himself.

Alarms prior to the crisis due to lack of economic resources and personnel to solve the complex problems that arose.

A year before the disaster, the director of the institute had written, in an article for a Chinese scientific magazine, about the enormous security problems in the laboratories.

And he warned: "The manipulation of viruses in the laboratory can produce great benefits, but it can also cause catastrophes."

The third element is a scientific study published by three scientists - a geneticist from Montana, a pharmacologist from Duke University and a German gynecologist - according to which the demonstration of the non-natural origin of the Covid-19 virus must be sought in the way in which that

are attacked

.

In nature, these "hinges" appear randomly and in a limited way along the genome chain.

When there is human intervention - many workers in the world manipulate viruses for medical and pharmacological research - these cuts are, however, much more numerous and do not appear randomly but are well spaced.

The three researchers claim to have tested their theory about the Covid-19 genome, comparing it with that of 70 other coronaviruses found in nature: the difference, they say, is obvious.

Here the scientists are divided into two groups: those -a few- who from the beginning took the animal origin of the virus for granted, dismiss the method proposed by their three colleagues as totally unreliable, fallacious.

Many others, surprised by the simplicity of a method no one had thought of before, are reproducing the experiment in their sample databases, seeking confirmation.

This could indicate the genetic manipulation of the Covid-19 virus as highly probable, although, in any case, it will not allow us to reach absolute certainty.

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