According to Kryuchkov, the “delta” will be replaced almost completely, but “it will remain in animals in some form, in humans in a small amount and will “ripen”. 

“And then, when Omicron already has significant immunity, it can make itself felt and cause a more pathogenic outbreak,” he said.

Kryuchkov also believes that the pandemic could last another two to three years.

In addition, he stated that vaccination is "a very powerful defense for the body."