Scientists from the University of Cambridge and the Pirbright Institute have identified changes in the coronavirus that made it dangerous to humans, study published in the journal PLOS Biology.
The genetic mutations that allowed the virus to pass from bats to humans were found to be similar to those that caused the SARS outbreak in 2003.
According to experts, changes in the structure of the coronavirus protein have occurred over the years, which, possibly, allowed it to overcome the species barrier and become infectious to humans.
Earlier, Russian scientists found a coronavirus with 18 mutations in a patient with reduced immunity.
As specified, a 47-year-old woman with malignant lymphoma contracted a coronavirus infection last spring, until September her smears showed a positive result.