Covid-19 Vaccine Covishield being transported to various parts of the country from Pune BENGALURU: India, which is known to produce a significant share of vaccines in the world routinely, is estimated to produce the second highest number of Covid-19 vaccine doses after the US in 2021, according to analysis of publicly available production deals. Data shared with TOI by UK-based science information and analytics company Airfinity shows that as of January 12, Indian firms would be manufacturing more than 3.6 billion doses of six different vaccines this year, compared to 4.8 billion doses of 12 candidates estimated to be produced in the US. However, at least some of the candidates that US firms have deals for are unlikely to be ready for market this year, indicating that the estimations for the country may dip later.