In WHO explained the statement for a dangerous tendency of mixing of vaccines from Koronavirus

At a briefing on July 12 Svaminatan declared that now there is a tendency in the world when in the countries with enough of vaccines start reflecting on busterny doses or on mixing of different preparations for immunization. "It is a little dangerous tendency. We are in a zone of absence of data and proofs which concern mixing of vaccines. The situation in the countries will be chaotic if citizens start solving when...