These viruses infect amoebae, little more than single-celled blobs that live in soil and water, but experiments indicated that the viruses do still have the potential to be infectious pathogens. The team introduced the viruses into a culture of live amoebae, showing that they were still capable of invading a cell and replicating.
The project comes from a team of researchers at Aix-Marseille University in France who previously revived a 30,000-year-old virus found in Siberian permafrost in 2014. With the latest bunch of viruses including one that dates to 48,500 years ago, the researchers have possibly revived the oldest virus yet.
“48,500 years is a world record,” Jean-Michel Claverie, one of the paper’s authors and a professor of genomics and bioinformatics at the Aix-Marseille University’s School of Medicine, told New Scientist.
Writing in their paper, the researchers explain that more work needs to focus on eukaryote-infecting viruses, noting that “very few studies have been published on this subject.” They explain that rising temperatures from climate change are likely to reawaken many microbial threats, including pathogenic viruses, from the ancient past.
“As unfortunately well documented by recent (and ongoing) pandemics, each new virus, even related to known families, almost always requires the development of highly specific medical responses, such as new antivirals or vaccines,” the study authors write.
“There is no equivalent to ‘broad spectrum antibiotics’ against viruses, because of the lack of universally conserved druggable processes across the different viral families. It is therefore legitimate to ponder the risk of ancient viral particles remaining infectious and getting back into circulation by the thawing of ancient permafrost layers,” they add.
Many dangers are buried in the snow, will come to the fore when it melts
According to reports, European researchers have detected these viruses during research-based exploration in Siberia, Russia. He has revived these viruses for a special purpose and divided them into 13 different germ categories. Since these viruses have become alive after dying in a way, that's why all have been named 'zombie virus'. According to Bloomberg's report , researchers said that these viruses were frozen in ice for millions of years, yet their ability to spread infection remains intact.
Among these viruses, the oldest zombie virus has been named Pandoravirus Yedoma. This very ancient member of the germ species has also broken the record of one of its brothers in terms of age. The age of that virus found in the year 2013 was said to be 30 thousand years. But the longevity of Pandoravirus Yedoma is more than 18 thousand 500 years.
For thousands of years, greenhouse gases (such as methane) were buried in ice. But due to the continuous melting of ice due to climate change, now there is a fear of these gases spreading in the air. And its information is very less that what effect the spread of these gases in the air will have on those microbes which are inactive due to being buried in snow for a long time.
Scientists from Russia, Germany and France involved in the research have said that the biological risk of resurgence of the viruses they have discovered is very low. He told that for the study he has targeted those strains which can infect only microscopic amoeba bacteria. The problem is if the virus that infects animals or humans revives. If this happens then that problem can be very big. According to the researchers, their study can tell that this danger is really there. Viruses buried in ice since ancient times can be freed due to climate change.
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