Watch: India vaccine status update

Four Covid-19 vaccine candidates have raised hopes for a more robust fight against the coronavirus pandemic. Pfizer-BioNTech and Moderna have reported about 95 per cent efficacy for their Covid-19 vaccine candidates, while the Russian jab Sputnik V has shown over 91 per cent efficacy in trials. AstraZeneca-Oxford University's Covid-19 vaccine candidate has shown two ranges of efficacy.