According to new research, animals sold at the Wuhan market are most likely what ignited the fire. Pandemic Covid-19
The World Health Organization advised in June that experts continue to investigate all probable causes of the Covid-19 epidemic, including a lab leak. Two recent research utilize very different methodologies but reach the same conclusion: The coronavirus most likely originated in the Huanan Seafood Market in Wuhan, China.
The research were initially released as preprints online in February, but have since completed peer review and were published in the journal Science on Tuesday.
In one, a geographical and environmental investigation was conducted by scientists from all around the world using mapping software and social media posts. They assert that the virus was definitely present in live animals sold at the market in late 2019 despite the fact that the precise circumstances are yet unknown. The animals were kept close to one another, making it easy for diseases to spread. The study did not, however, identify which animals could have been ill.
The scientists came to the conclusion that the early Covid-19 cases were concentrated among market sellers who sold these live animals or among customers who went shopping there. They contend that two distinct viruses that were circulating in the animals and spread to people.
This study demonstrates that the coronavirus most likely existed in two separate forms, A and B, during its inception. At least two cross-species transmission episodes into humans produced the lineages.
According to the researchers, lineage B was responsible for the first animal-to-human transfer, which most likely occurred around November 18, 2019. Only those with a direct link to the Huanan market were discovered to have the lineage B type.
The scientists suspect that lineage A was introduced into humans from an animal within weeks, if not days, following lineage B infection. Lineage A was discovered in samples from persons who lived or stayed near a market.
According to co-author Joel Wertheim, an associate adjunct professor of medicine at the University of California, San Diego, the possibility of such a virus arising from two distinct occurrences is minimal.
To lessen the likelihood of future pandemics, the researchers seek to pinpoint which animal initially became infected and how. Collaboration among experts throughout the world might mean the difference between a disease with a minor impact and one that kills millions.
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