As Covid-19 cases continue to mount in India, the Russian ambassador here, Nikolay Kudashev, has said Moscow is talking to the Indian government "on different levels" about cooperation that could include "supplies, co-development and co-production" of Sputnik V, the first anti-Covid vaccine in the world. The vaccine, according to a Lancet study, has been found in initial trials as causing no serious side effects. Official sources here confirmed to TOI that Russia had shared formally modalities of cooperation with India on the vaccine and that the Indian government was examining the details. "As far as we know, after some necessary technical steps, the vaccine would be ready to be widely used, including abroad," said Kudashev.