The following was written by Betsy McKay, Pulitzer Prize Winner, who covers U.S. and global public health for the Wall Street Journal.
Neither of the papers described and linked below settles the question of whether Covid 19 was the result of gain of function research in the Wuhan laboratory. But they highlight that it's foolish to assume with certainty that the virus did come from the lab, and so we're safe if we just stop the research.
In the future more viruses will jump from animals to humans. As Bill Gates and George W. Bush shouted from the rooftops in years past, we need to be prepared. Someday if there's a virus that's as infectious as the Delta variant and as lethal as Ebola or SARS, we're going to be up shit creek if we're not ready for it.
I've still got some of my surgical grade N95 masks I acquired back in 2005, after SARS. N95 masks should be an essential part of your survival kit, along with food, water, light sources, fuel, weapons and ammo.
New Reconstruction Points to Animal Origins for Covid-19
A scientist known for investigating viral origins has reconstructed the first known weeks of the Covid-19 pandemic, adding to a growing body of evidence that the virus behind it jumped from infected animals to humans rather than emerging from laboratory research.
In a paper published Thursday in the academic journal Science, Michael Worobey concludes a wholesale seafood market in Wuhan, China, where live mammals were sold is very likely to be the site of the origin of the pandemic.
The precise role of the Huanan market in the pandemic has been debated by scientists. Dr. Worobey, an evolutionary biologist at the University of Arizona who previously unearthed clues about the origins of the 1918 pandemic flu and HIV, showed that most of the known Covid-19 cases in December 2019 had a direct or indirect link to the Huanan market. These infected people worked at the market, visited it, had contact with someone who was there or lived nearby, he found by piecing together genetic data, reports and accounts of early patients....
Researchers at the Pasteur Institute, a French nonprofit, reported in September that they had found three coronaviruses in bats in caves in northern Laos, close to the Chinese border, that very closely resemble SARS-CoV-2 and can infect human cells. The portion of the bat viruses that attach to cells, called the receptor binding domain, differs from that portion of SARS-CoV-2 by only one or two amino acids, the researchers said. Their findings were reported on a preprint server, and are being reviewed for publication in a scientific journal.
One of the viruses, collected in 2020 and dubbed in their study “Banal-52,” is so close that it is “essentially the progenitor of SARS-CoV-2,” Dr. Garry said during a webinar this week hosted by the Global Virus Network, a coalition of virologists.
The discovery of these viruses undermines the hypothesis that SARS-CoV-2 was created or adapted in a laboratory, he said. The differences between these viruses and SARS-CoV-2 show that the latter circulated in another animal after bats, adapting other properties such as a furin cleavage site that made it more transmissible among humans, he said.
The viruses in Laos and another close relative of SARS-CoV-2 found years ago in China, called RaTG13, support the idea that close ancestors of the pandemic pathogen probably came from a bat in southern China or northern Laos, said Dr. Bloom.
Dr. Bloom was among 18 scientists who signed a letter published in May calling for a deeper investigation into both the hypothesis that the pandemic resulted from a laboratory leak as well as from a spillover from infected animals to humans.
“It’s still unclear where the first infection happened and how the outbreak originated in Wuhan,” he said.
https://www.wsj.com/articles/new-rec...19-11637262041
Here are links to the papers described in the article,
https://www.science.org/doi/10.1126/science.abm4454
https://www.researchsquare.com/article/rs-871965/v1