“The omicron variant, which carries multiple substitutions in the S-protein of the coronavirus, half of which are located in the receptor-binding domain, has the highest contagiousness among all SARS-CoV-2 variants,” says a document published on the agency's website.

It is specified that mutations that reduce the effectiveness of antibodies have also been found in the delta coronavirus strain.

Earlier, the Ministry of Health of Russia released a new version of the guidelines for the treatment of COVID-19.

They now include information about the omicron strain.