SII to seek WHO's approval for supplying 200 million doses of Covid vaccines to GAVI-COVAX alliance SII to seek WHO's approval for supplying 200 million doses of Covid vaccines to GAVI-COVAX alliance The Serum Institute of India (SII) has also announced that it will sell doses of its Covid-19 vaccine Covishield to the Centre at Rs 200 per dose while the same will be sold at Rs 1,000 per dose in the private market. advertisement UPDATED: January 12, 2021 19:27 IST Trucks being used to transport Covishield from SII's facility in Pune's Pimpri Chinchwad (Photo Credits: PTI) One of the world's largest vaccine makers, Pune-based Serum Institute of India (SII) will supply 200 million doses of its Covid-19 vaccine to the WHO's GAVI-COVAX alliance in the next few weeks, sources told India Today.