The total number of coronavirus cases across the world has crossed the 10-million mark and the death toll has gone past 500,000. <br /> <br />There currently are over 100 vaccines at various stages of development worldwide, including in India, Britain, China, the US, Russia and Israel. <br /> <br />Dr Soumya Swaminathan, the chief scientist at WHO, said nearly 2 billion doses of the Covid-19 vaccine would be ready by the end of next year. But who would be the first to get a Covid-19 vaccine? Probably people in the country where the first effective vaccine is developed. <br /> <br />Thus, there's pressure from governments on pharmaceutical companies and scientists to come up with a vaccine as soon as possible. Last week, WHO said UK-based AstraZeneca was leading the vaccine race while US-based pharmaceutical major Moderna was not far behind. <br /> <br />Several drugs, however, have shown encouraging results. While a definite treatment for coronavirus is nowhere in sight, drugs like dexamethasone and remdesivir are being used