Ancient virus resurrected after 30,000 years, scientists say

[AdamSmith]

Well, this is reassuring.

Ancient virus resurrected after 30,000 years, scientists say

cbsnews.com

Cells infected with Pithovirus, a 30,000-year-old virus recovered from the Siberian permafrost. Matthieu Legendre et. al.

As climate change leads to rapidly melting permafrost in the Russian tundra, a recent find has scientists worried that trouble may be lurking below. A 30,000 year old virus of unprecedented size has been found and reactivated.

The virus, dubbed Pithovirus Sibericum, appears to affect amoebas and not human or mouse cells. Named after the Greek word, "pithos," meaning a large earthenware jar, it was discovered by a group of researchers from Aix-Marseille University.

The virus, which is so large it can be seen under an optical microscope, was found in a 98-foot-deep sample of permafrost near the East Siberia Sea, where the average annual temperature is 7 degrees Fahrenheit, according to the Agence France-Presse.

The group's new discovery raises the frightening possibility that more harmful pathogens could potentially be revived. Perhaps, it could be something no human has ever encountered before, researchers say.

"There is now a non-zero probability that the pathogenic microbes that bothered [ancient human populations] could be revived, and most likely infect us as well," study co-author Jean-Michel Claverie, a bioinformatics researcher at Aix-Marseille University in France, told LiveScience in an email. "Those pathogens could be banal bacteria (curable with antibiotics) or resistant bacteria or nasty viruses. If they have been extinct for a long time, then our immune system is no longer prepared to respond to them."

As oil and mining companies begin to drill in these now thawing areas, some scientists -- like Claverie -- are worried that diseases that once plagued both Neanderthals and humans could become active again and infect their modern-day counterparts. Others are less concerned.

"We are inundated by millions of viruses as we move through our everyday life," said Curtis Suttle, a marine virologist at the University of British Columbia in Canada, who was not involved in the study told LiveScience. "Every time we swim in the sea, we swallow about a billion viruses and inhale many thousands every day. It is true that viruses will be archived in permafrost and glacial ice, but the probability that viral pathogens of humans are abundant enough, and would circulate extensively enough to affect human health, stretches scientific rationality to the breaking point."

"I would be much more concerned about the hundreds of millions of people that will be displaced by rising sea levels than the risk of being exposed to pathogens from melting permafrost."

The study was published March 3 in the journal Proceedings of the National Academy of Sciences.

http://www.cbsnews.com/news/ancient-virus-resurrected-after-30000-years-scientists-say/

[lookin]

Renowned reviver of ancient pathogens, Dr. Rictus

notices his dinner invitations are starting to dry up.

[MsGuy]

Well, this is reassuring.

"There is now a non-zero probability that the pathogenic microbes that bothered [ancient human populations] could be revived, and most likely infect us as well," study co-author Jean-Michel Claverie, a bioinformatics researcher at Aix-Marseille University in France, told LiveScience in an email. "Those pathogens could be banal bacteria (curable with antibiotics) or resistant bacteria or nasty viruses. If they have been extinct for a long time, then our immune system is no longer prepared to respond to them."

I ain't no mathematician but doesn't non-zero probability basically translate as does not clearly and directly contradict known laws of physics?

It seems to me that, in the case of non-zero probabilities, it would be best to confine the use of most likely, could be and if...then constructions to Big Foot and anal probing alien episodes on the history channel.

====

By the way, the last sentence of the quote is simply factually untrue. The human immune system is specifically constructed to cope with novel viruses. True it has a significant possibility of failure but it does a fair to middling job of adapting to new challenges.

[AdamSmith]

I did say it was reassuring.

Of course any Neanderthals who suffered a mild bout of Late Holocene ebola after a tad too much bush meat may beg to differ.

[RA1]

Wait until more ice melting uncovers a mammoth or sabre tooth tiger and some "mad scientist" clones the DNA into a real live terror. OTOH, The Far Arena is a pretty good fictional account of a human "surviving" much the same kind of treatment.

Best regards,

RA1