All Indian children aged 12 or older will become eligible for Covid-19 vaccinations from next month when drugmaker Cadila Healthcare launches its ZyCoV-D product, two sources with direct knowledge of the matter told Reuters.

The world's first DNA-based Covid-19 vaccine, ZyCoV-D won emergency authorisation from Indian regulators last month.

From October, the company, better known as Zydus Cadila, will produce 10 million doses a month.

The health ministry did not immediately respond to a request for comment. The sources sought anonymity because they were not authorised to talk to the media.