Dhaka, Jan. 12 -- Indian airlines started delivering batches of Covid-19 vaccines across the country on Tuesday, getting ready for the launch of a campaign to offer shots to 1.3 billion people in what officials call the world's biggest vaccination drive.

Authorities hope to inoculate 300 million high-risk people over the next six to eight months. Vaccinations are scheduled to begin on Saturday, reports Reuters.

First to get the vaccine will be 30 million health and other front-line workers, followed by about 270 million people aged over 50 or deemed high-risk.

Airlines were due to deliver 5.65 million vaccine doses on Tuesday to various cities, aviation minister Hardeep Singh Puri said on Twitter.

In Prime Minister Narendra Modi's hom...