“We still see a shocking inequality in access to vaccines against COVID-19 in the world,” Gebreyesus quoted TASS as saying.

According to him, "in low-income countries, most of which are in Africa, less than 2% of adults are fully vaccinated, compared with almost 50% in high-income countries."

Earlier, the director of the Gamaleya Research Center for Epidemiology and Microbiology, Alexander Gintsburg, in an interview with the NSN, told how herd immunity is formed.