He noted that a strain monitoring system created by the government is functioning in Russia.

"The data show that, indeed, there are a lot of modified versions of our own, not British, not Indian," circulating, Gintsburg was quoted as saying by TASS.

According to him, scientists are studying the properties of these viruses.

Earlier, Natalya Pshenichnaya, deputy director for clinical and analytical work of the Central Research Institute of Epidemiology of Rospotrebnadzor, said that the main symptoms of coronavirus disease can change due to COVID-19 mutations.