COVID-19: Russia's 'Sputnik Light' could prove to be a heavyweight
Russia's Sputnik Light, a single-shot and slimmed-down Covid-19 vaccine with an overall efficacy of 79.4%, has proven effective against all new strains of the infection. Approved only in Russia for now, the vaccine is said to cost under USD10 per jab. It is also expected to double vaccination rates. Trial results showed Sputnik Light can increase the level of antigen-specific IgG antibodies by over 40 times.