Crime & Public Safety Covid 19 origins

Here is the official origins PDF report by who 

Virus origin / Origins of the SARS-CoV-2 virus (who.int)

The COVID-19 coronavirus epidemic has a natur | EurekAlert!

@meleona W.H.O is paid by the Chinese to keep their mouth shut. Give us a good source of information without any bias or political agenda. 

Scientists have zeroed in on the stall where Covid-19 likely emerged

The recent studies investigated the earliest days of the pandemic, tracing the initial wave of infections in China. In particular, researchers paid close attention to the Huanan Wholesale Seafood Market. It’s part of the bustling live animal trade in Wuhan, a city of more than 8 million people. By one estimate, more than 47,000 animals across 38 species were sold in the city between May 2017 and November 2019, often suffering “poor welfare and hygiene conditions.” Bringing animals together from far-flung regions with inadequate sanitation and selling them to people for food, fur, or as pets is a recipe for breeding new diseases.

In one of the studies, researchers examined photographs, sales records, social media, genome sequences, surveys, and infection patterns around Wuhan in 2019. The researchers found not only that the initial Covid-19 cases emerged at the market, but that the “overwhelming majority were specifically linked to the western section of the Huanan market, where most of the live-mammal vendors were located.” The highest concentration of positive SARS-CoV-2 samples came from a single stall.

That section of the market was known to be selling Asian raccoon dogs (Nyctereutes procyonoides), hog badgers (Arctonyx albogularis), and red foxes (Vulpes vulpes) at the time of the outbreak, all animals that are susceptible to SARS-CoV-2.

Worobey et al./Zenodo.org

Researchers also studied the viruses themselves. From looking at the genomes of the viruses among the collected samples, they found that there were two distinct lineages of SARS-CoV-2, dubbed A and B, that were infecting people at the outset. Scientists think the B lineage formed after A, though B is not necessarily a descendant of A. Researchers estimated the probability that both lineages came from a single origin as 3.6 percent, meaning they likely followed separate evolutionary paths.

The first known human Covid-19 case was likely caused by B, which also became the dominant strain. The first known human infection caused by A occurred a week later.

The study from the Chinese CDC also confirmed that both lineages were spreading around the market. Together, the papers paint a new story of the early days of the pandemic, as Carl Zimmer and Benjamin Mueller at the New York Times wrote:

These findings came as a surprise. In the early days of the pandemic in China, the only Covid cases linked to the market appeared to be Lineage B. And because Lineage B seemed to have evolved after Lineage A, some researchers suggested that the virus arrived at the market only after spreading around Wuhan.

But that logic is upended by the new Chinese study, which finds both lineages in market samples.

The distinct genomic sequences and the timing of the infections point to a scenario where SARS-CoV-2 made the jump into humans on two separate occasions at the Huanan market. One of the new papers raised the possibility that there may have been even more spillover events there.

Covid-19 origin: Scientists traced the outbreak to a Wuhan animal seller - Vox

Asian H5N1 viruses were first detected in domestic geese in southern China in 1996. By 2000, their host range had extended to domestic ducks, which played a key role in the genesis of the 2003/04 outbreaks.

Origin and evolution of highly pathogenic H5N1 avian influenza in Asia - PubMed (nih.gov)

@dyno