Photo: Unsplash Scientists have found the first carrier of the coronavirus to a human
Researchers have conducted an extensive study of 1252 full genomes COVID-19 and its immediate varieties.
Coronavirus SARS-CoV-2 could move from bats to humans through stray dogs, according to scientists at the University of Ottawa in Canada. About it, said in a paper published in the journal Molecular Biology and Evolution.
According to scientists dogs eating bats, have become intermediaries in the spread of the virus. So, once in the intestine of dogs, the bacteria could provoke the evolution of the virus that has learned to avoid the immune response in humans, and after a while transferred to the person.
This is evidenced by research 1252 full-sized genomes of coronaviruses, including the precursor of SARS-CoV-2, coronavirus, bat BatCoVRaTG13. It coincides with the current form of the coronavirus 96%.
“In mammals is a protein called ZAP, which resists the ingress of infection in the body. However it stops working when the body attacks the virus where the few of the so-called CpG sites. It turned out that the closest relatives of SARS-CoV-2 very few of these sites,” the researchers note.
According to them, canine coronavirus, infects the tissues of the digestive system, have the same level CpG, like SARS-CoV-2 and BatCoVRaTG13.
Scientists are reminded that most cases of coronavirus observed disorder of the stomach, which means that the virus attacks the gastrointestinal tract.
Previously, scientists called consequences COVID-19 for the body.