Moderna will increase its deliveries to 1.33 million doses a week in July from 733,000 previously expected, raising the figure to 2.57 million a week in August and 2.95 million a week in September, the ministry said.
"This has been driven by several factors, including significant reductions in cases in the US and other major developed countries, accelerated rollout of COVID-19 vaccines globally and, most recently, US health authority guidance on testing for fully vaccinated individuals," the drugmaker said.
Abbott sees second-quarter adjusted profit from continuing operations of at least $1 per share, compared with analysts' estimates of $1.23 per share.
The official announcement will be made later on Friday, said the source, who requested anonymity given the sensitivity of the situation.
If the J&J vaccine has been approved, it could ease some logistical challenges. The vaccine is administered in a single dose and can be stored in normal fridges while the Pfizer-BioNTech and Moderna shots must be kept in freezers.
Indian health officials say they generally ask for so-called bridging trials to determine if a vaccine is safe and generates an immune response in its citizens whose genetic makeup can be different from people in Western nations.