"We urge countries to continue to expand vaccination coverage ... We believe that vaccination protects, at least from the severe course of the disease," TASS quoted her as saying.

Earlier, WHO Director General Tedros Adhanom Ghebreyesus said that 23 countries had reported the detection of the omicron coronavirus strain.

Virologist Yevgeny Timakov, in an interview with FAN, gave a forecast regarding the situation with COVID-19 before the New Year holidays.