MOSCOW, Russia (AFP) — Health officials in Russia approved a single-dose version of the Sputnik V coronavirus vaccine, the developers of the shot said Thursday. The Russian Direct Investment Fund (RDIF), which helped finance the vaccine, said in a statement that Sputnik Light “demonstrated 79.4 percent efficacy” compared to 91.6 percent for the two-shot Sputnik V. The results, it said, were drawn from “data taken from 28 days after the injection was administered as […]