“In recent weeks, we have not recorded the emergence of new variants of the virus.

Including no sublines of the “omicron” were identified, he said in an interview with RIA Novosti.

He clarified that the share of "stealth-omicron" by the end of March this year amounted to about 80% and does not change significantly.

Earlier, immunologist Vladimir Bolibok, in an interview with NSN, recalled the need for revaccination of the population against coronavirus infection.