The Serum Institute of India is working to market its two key vaccines for Covid -- Covovax and Covishield -- in China, which is seeing a resurgence of the pandemic. "It is very important for the world to get back to its supply chain issues and investment... (so) it is better for the world that China recovers from this," SII chief Adar Ponawala told NDTV in an exclusive interview today. "We are trying to engage with China and telling them to set aside political differences, issues and apprehensions and take some of he western vaccines as a booster," he said. Asked about China's response, he said, "I think they are deciding which way they want to go... I just hope they decide one way or another quickly".