Prime Minister Narendra Modi on Saturday said three vaccines are currently under testing phase in India and their mass production will begin as soon as the scientists give the green signal.

As the world inches closer to a Covid-19 vaccine with many vaccine candidates under final trials, the Prime Minister speaking from the rampart of the Red Fort on the occasion of the 74th Independence Day, assured the nation that the fight against the pandemic was progressing in the right direction and at right pace.