“In three seasons, herd immunity is usually formed all over the world, and this is enough if there is no effective mass vaccination.
If there is, then maybe we will stop the pandemic by the end of the second year all over the world, "RIA Novosti Semyonov quotes.
According to him, pandemics of such infections usually last two to three years, and the COVID-19 pandemic lasts a year and a half.
Earlier, immunologist Nikolai Kryuchkov said that Russians will not have to be revaccinated against coronavirus every six months throughout their lives - this can only happen during a pandemic.