Fast-track approval to vaccines approved elsewhere, says virologist V Ravi SECTIONS Share Synopsis India should fast-track approval of Covid-19 vaccines that are being used under licence in other countries to fill the vaccine supply gap in the country, leading virologist V Ravi, who is on the scientific advisory board for the Sputnik V vaccine, told Indulekha Aravind on ET’s podcast, The Morning India should fast-track approval of Covid-19 vaccines that are being used under licence in other countries to fill the vaccine supply gap in the country, leading virologist V Ravi, who is on the scientific advisory board for the Sputnik V vaccine, told Indulekha Aravind on ET’s podcast, The Morning Brief. Edited excerpts: