Scientific Study Traces the Evolution & Migration of SARS-CoV-2. Where did the Virus Originate?

ER Editor: This study has identified 3 basic types of SARS-CoV-2 virus with entirely different regional concentrations. Type A or the so-called ancestral strain, which has a 96.2% resemblance to the virus strain found in bats, is actually common to western landmasses such as Europe, N.America and Australia. Type B is found in China, whereas Type C is typical of areas peripheral to China, such as S. Korea, Taiwan and Hong Kong (although instances of each type can be found elsewhere). We need to let that sink in as we consider the nonsense around the Wuhan wet market and its sale of live bats, making us believe that what they’re calling ‘COVID-19’, i.e. this allegedly single entity, came from the local bat population (or the local P4 lab). Further, the first case of the virus infection studied in a Chinese person from the area, collected on Dec. 24, 2019 (not the first-ever case), was not close to being of the Type A strain.

The study below was conducted on 160 people with covid-19, many of whom are Chinese, but a number that are not who travelled. The researchers are a team drawn from UK and German institutions.

We remind readers of the various articles we’ve published on coronavirus-like symptoms/cases being noted in various countries, including the US, several months back into 2019.


Scientific Study Traces the Evolution and Migration of SARS-CoV-2. Where did the Virus Originate?

Review of an Important Peer Reviewed PNAS Study entitled Phylogenetic network analysis of SARS-CoV-2 genomes, by Peter Forster, Lucy Forster, Colin Renfrew, and Michael Forster

Phylogenetic network analysis of SARS-CoV-2 genomes by Peter Forster, Lucy Forster, Colin Renfrew, and Michael Forster published by the Proceedings of the  National Academy of Sciences of the United Sciences of America (PNAS) focuses on a study of the genomes of 160 covid-19 patients

As readers may know, viruses are RNA-based entities that periodically and regularly undergo mutations. One can study these mutations and almost like clockwork trace their evolution – i.e. their lineage and migration pattern.

The authors specifically employed a methodology known as “character-based phylogenetic networks”. The technique has been used as the “method of choice” to reconstruct prehistoric human population movements, language evolution, various ecological studies, and some 10,000 phylogenetic studies of diverse organisms – and now virology.

This is an early study – the sample size is only 160 humans – with 100 types. However, the results are stunning. Among the key conclusions:

  1. There are three major types of coronaviruses, A, B, and C, with type A being the ancestor of SARS-CoV-2 in humans and showing 96.2% similarly to a particular strain of virus in bats.
  2. Most of the viruses in China and Wuhan are of type B while most of the viruses found in America, Europe and Australia are of type A and C. Type C is not found in Mainland China but is found in significant numbers in Hong Kong, S. Korea, and Taiwan.
  3. While Type B is found in large numbers across Mainland China (including Wuhan), it is not found in significant numbers around the rest of the world.
  4. The methodology used was successfully used to trace several clinically verified cases of virus travel from Wuhan out to various nations, including Brazil and Italy. As such, the authors concludes the “character-based phylogenetic networks” methodology was useful and appropriate for studying the spread and evolution of the coronavirus.
  5. Yet, according to the methodology, the earliest sample of virus studied – collected on December 24 2019 in Wuhan – WAS NOT close to being the ancestor of SARS-CoV-2 (ER: type A, closely resembling the bat strain of the virus).

According to the authors:

In a phylogenetic network analysis of 160 complete human severe acute respiratory syndrome coronavirus 2 (SARS-Cov-2) genomes, we find three central variants distinguished by amino acid changes, which we have named A, B, and C, with A being the ancestral type according to the bat outgroup coronavirus. The A and C types are found in significant proportions outside East Asia, that is, in Europeans and Americans. In contrast, the B type is the most common type in East Asia, and its ancestral genome appears not to have spread outside East Asia without first mutating into derived B types, pointing to founder effects (ER: where a small subpopulation drifts from the original larger population to create its own narrow genetic expression) or immunological or environmental resistance against this type outside Asia. (To read the complete scientific report in pdf click here)

Some observations…

First, most of the viruses in the West do not seem to have arisen from China. The authors identified Type B as the main virus type found in Mainland China, with that Type mostly confined to Mainland China, and Types A and C predominant outside China – including U.S., Europe and Australia.

Two reasons given for why Type B variants (“China’s virus,” if you must) did not expand much beyond Mainland China: one being “complex founder scenario” and second, “the ancestral Wuhan B-type virus is immunologically or environmentally adapted to a large section of the East Asian population, and may need to mutate to overcome resistance outside East Asia.”

Since I have yet to see any reputable studies that shows any strains of the coronavirus having any affinity to or dislike of any ethnicity of people, let’s focus on “complex founder scenario” and “environment” resistance.

The authors have noted many perplexities in the study. But if we consider the possibility that coronavirus did not originate in Wuhan, those perplexities all go away. More specifically, let’s presume a scenario where the virus was already circulating under the radar in the West and was carried to Wuhan in December or some time before, where it then spread locally within China.

Consider the fact that the authors had noted that Type B variants outside China did not show the “one-month” variations that would have been expected were Type B variants and descents to have traveled out of China to infect the rest of the world.

But if Type B variants – including Type C “descendants” – were already communally established and transmitted outside China, then this paradox easily goes away.

Assuming the virus to have been brought to Wuhan instead of originating in Wuhan would also constitute a “complex founding scenario” that the author hypothesized could solve the riddle.

This assumption also provides an explanation for the “environmental resistance” the author hypothesized. If the virus arrived in Wuhan with the Chinese authorities quickly closing down the city soon afterwards, the virus would not have had chance to spread to the rest of the world. The Chinese government’s shutting down of Wuhan in January could easily form the “environmental resistance” the authors hypothesized for the Type B virus.

Finally, it is important to note that in this study, of the 160 samples, most are from patients in China, only a few from outside Asia. In this study, the authors had tentatively labelled Type C as a descendant of Type B found in China. But while Type B is found mostly in Wuhan, it has also been found in significant numbers outside China. As more data from outside China comes live (one hopes soon), the same methodology will probably reveal that the predecessor to Type B and Type C arose outside, not inside, China. Type A and Type C thus all arose outside China and independently of China.

While the current study is China-centric (most data are from China), it already has established that the virus did not arise in Wuhan. The authors noted importantly in the data supplement section, “the oldest isolate from 24 December 2019 (brown node, week 0) lies diagonally opposite to the bat virus outgroup root.”

As we get more data, studies such as this will shed a lot of light on the origins of the coronavirus. It is really too bad, such a shame that the U.S. and Europe has missed such critical times testing and tracking the viral flow. It is worth noting that U.S. officials are blaming China for the virus. But even with limited data, the authors have been able draw some preliminary conclusions regarding the geographic origins of the virus.


Original article

The title of the PNAS article is 

Phylogenetic network analysis of SARS-CoV-2 genomes (pdf)

Authors: Peter Forster , Institute of Forensic Genetics, Münster, Germany, Lucy Forster, McDonald Institute for Archaeological Research, University of Cambridge, Colin Renfrew, Fluxus Technology Limited, Colchester, UK, and Michael Forster, Institute of Clinical Molecular Biology, Christian-Albrecht University of Kiel, Germany


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