@kuba_

Precisely, Sputnik V seems to be a pretty regular and working vaccine. The problem is twofold — first, Kremlin politicised it with the classic "we're the best, fuck the rest" propaganda, which made people already suspicious.

Second, as part of their regular divide & conquer tactics they flooded the West with anti-vax propaganda, which was promptly translated back to Russian by local anti-vaxxers.