Mysterious new virus of completely unknown orig
A mysterious new virus of completely unknown origin has emerged from a lake in Brazil leaving scientists 8216;puzzled 8217;.
It has been named Yaravirus after Yara, a supernatural mermaid who lured soldiers underwater to live with her.
Researchers found over 90 per cent of Yaravirus genes have never been seen before, making it 8216;mysterious 8217; and wholly unique.
The discovery comes amid the outbreak of a killer novel virus across the world which started in China.
COVID-19 coronavirus was first discovered in December 2019, and since, has killed more than 1,000 people and infected over 44,500.
The other 68 have never been seen before, known as orphan genes.
A search of over 8,500 genetic material from across the globe in a scientific database offered no clues as to what Yaravirus might be closely related to.
The team, led by Brazil 8217;s Federal University of Minas Gerais, said: 8216;Yaravirus expands our knowledge of the diversity of DNA viruses. 8217;
Yaravirus was taken from a single-celled creature called amoeba, which live in damp environments.
The scientists speculate Yaravirus is the first isolated case of an unknown group of amoebal virus.
They write Yaravirus has 8216;a new lineage of amoebal virus with a puzzling origin and phylogeny 8217; in a published paper on the server bioRxiv.
8216;Most of the known viruses of amoeba have been seen to share many features that eventually prompted authors to classify them into common evolutionary groups, 8217; the authors write.
For now, Yaravirus doesn 8217;t appear to pose any threat to humans. For a start, it cannot transfer to humans 8211; only between amoeba.
It 8217;s not unheard of for scientists to find distinct viruses, and in the years between 2016 and 2019, new discoveries in the world’s oceans surged from 15,222 to 195,728, Quanta reports.
Two of the senior members of the team that report Yaravirus 8211; virologists Bernard La Scola from Aix-Marseille University in France, and Jônatas S. Abrahão from Brazil 8217;s Federal University of Minas Gerais – are no strangers to unique viruses.
Two years ago, the pair helped to discover another water-dwelling viral novelty. Tupanvirus, also named after a mythological god, was found in a lake in Brazil.
Tupanvirus is a giant virus, so-called because they are protected by huge protein shells.
But Yaravirus is a much smaller specimen, and less complex. Importantly, the scientists said, it novel.
They said: 8216;Contrary to what is observed in other isolated viruses of amoeba, Yaravirus is not represented by a large/giant particle and a complex genome, but at the same time carries an important number of previously undescribed genes. 8217;
Another novel virus, discovered in December 2019, is currently spreading among the human population at a rapid speed.
COVID-19 coronavirus jumped from animals in a food market in China to humans and has since developed the ability to spread between people via a cough or sneeze.
So far what 8217;s been described as 8216;the worst enemy you can ever imagine 8217; has claimed more than 1,000 lives and struck down over 44,500 people in a matter of weeks.标签：