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Tech & Science Coronaviruses Similar to The COVID-19 One Have Just Been Found in Pangolins

03:16  30 march  2020
03:16  30 march  2020 Source:   sciencealert.com

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Coronavirus RNA was found in six of the 43 organ samples, linking the virus with five individual animals. Techniques for reading and filling in One of those lines even has a 'haircut' that resembles that of the COVID - 19 virus, with remarkably similar receptor-binding spikes jutting from their surfaces.

Scientists have found coronaviruses , genetically similar to the Covid 19 virus, in pangolins , leading to a hypothesis that they served as an intermediate host, much like civet cats Pangolins are critically endangered anteaters that resemble armadillos. While they are a protected species, they are often

a hand holding a turtle: A tree pangolin released from poachers in DR Congo. © Richard de Cauwer/iNaturalist/CC BY-NC 4.0 A tree pangolin released from poachers in DR Congo.

A search for the 'missing link' in the chain of the emergence of SARS-CoV-2 has uncovered two close cousins of the new coronavirus in shipments of pangolins being smuggled into China.

It's important to note that the discovery by researchers from across Hong Kong and China falls well short of identifying these precious mammals as the source of the current pandemic. However, the similarity of the strains does suggest the nation's pangolin market is a time bomb that needs to be defused.

Ever since the nexus for the outbreak of COVID-19 was traced back to a wet market in Hubei province, the search has been on to determine the virus's heritage. Initial studies of SARS-CoV-2's genome suggest it's highly possible that the virus emerged in a colony of horseshoe bats in Yunnan, a province that borders the south-east Asian country of Myanmar.

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Pangolins smuggled into China have been confirmed to contain viruses closely related to the one sweeping the world. Sale of the animals in wildlife markets should be strictly prohibited to minimise the risk of future outbreaks, says Coronavirus : Scientists find virus similar to Covid - 19 in pangolins .

Did pangolins transmit the coronavirus to humans? Is Covid - 19 their revenge on us for bringing them to the edge of extinction? In any event, yet another ban on trading and eating pangolins isn’t likely to help them, especially with its caveats for medical uses. Better instead to take on modern

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But if that is the case, it's hard to imagine how a bat became a source of infection in a densely populated city more than 1,000 kilometres to the north of its colony.

Granted, stalls in these Chinese wet markets sell a wide variety of live animals for food and traditional medicine, many of them sourced from Asia's tropics. Whether bats of any kind might have been present isn't clear, since the market was cleared long before the first indications of an outbreak were known.

Unlike horseshoe bats, though, the pangolin is almost guaranteed to have been on sale there.

The illicit sale of the endangered mammal - prized as a delicacy and a health tonic - is an 'open secret' throughout much of the nation, and a good place to start hunting for an intermediate host of the zoonotic virus currently wreaking havoc across the globe.

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Similarly , both COVID - 19 and flu can be mild, severe, or, in rare cases, fatal. Both can also lead to pneumonia. However, the overall profile of COVID - 19 “We have to differentiate between real infection and just detecting the presence of the virus. I still think it’s questionable how relevant it is to the

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Frozen tissues from 18 Malayan pangolins (Manis javanica) were obtained from anti-smuggling operations carried out by Guangxi Customs during 2017 and early 2018.

Coronavirus RNA was found in six of the 43 organ samples, linking the virus with five individual animals. Techniques for reading and filling in missing sequences soon provided the team with half a dozen detailed genomes of the pangolin's strains of the virus.

None were dead ringers for SARS-CoV-2, but there were a number of overlapping sequences that suggest these viruses were fairly closely related.

A second hunt through another batch of pangolin tissues taken from an operation later in 2018 followed, based on the newly acquired genomes. This analysis revealed a further three positive results out of 12 animals.

In addition to these specimens from the Guangxi operation, the team analysed pangolin scales, skin swabs, and unspecified tissues from a separate customs centre in Guangzhou, picked up in early 2019.

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Pangolins , or scaly anteaters, are mammals of the order Pholidota (from Ancient Greek φολῐ́ς, "horny scale"). The one extant family, Manidae, has three genera: Manis, Phataginus and Smutsia.

A novel coronavirus is a new coronavirus that has not been previously identified. The virus causing coronavirus disease 2019 ( COVID - 19 ), is not the There are many types of human coronaviruses including some that commonly cause mild upper-respiratory tract illnesses. COVID - 19 is a new

Taken together, the mix of newly sequenced coronavirus genomes are all 85.5 to 92.4 percent similar to SARS-CoV-2, and represent two lines of related virus. One of those lines even has a 'haircut' that resembles that of the COVID-19 virus, with remarkably similar receptor-binding spikes jutting from their surfaces.

The results might not be the smoking gun we're hoping for, as the search for the connection between the coronavirus's reservoir and the first humans to be infected continues.

Still, it's a wake-up call we desperately need. All those animals seized by customs were destined for live animal markets somewhere in China.

As impossible as it is to predict whether those particular lines of coronavirus could have made a leap into the human population, the current pandemic emerged from just such a branch of that family tree.

The sale of pangolins in China is already far from legal, but without the political will to provide the resources necessary to enforce the law, their sale will almost certainly continue to flourish, in spite of recent widespread bans of the sale and distribution of wild meats.

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There are many questions about the novel Coronavirus that remain unanswered, such as “how does the virus spread?” and “where did it originate?” Researchers point to the pangolin as a potential carrier of the novel coronavirus . Stay informed with live updates on the current COVID - 19 outbreak

COVID - 19 is a new strain of coronavirus that has not been previously identified in humans. It was first identified in Wuhan, Hubei Province, China, where it According to the World Health Organization, it is not certain how long the virus that causes COVID - 19 survives on surfaces, but it seems to behave like

A global pandemic is a tragic incentive to act. But with mounting evidence that pangolins play a strong role in the ecology of such a potential threat, perhaps it's the push China needs to finally get a handle on its illegal animal trade.

This research was published in Nature.

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