health ministry spokesperson did not immediately respond to a request for comment. Lawmakers in parliament have called for boosters to be authorised soon for all adults.
Last week, the health ministry urged Indian states to boost surveillance measures for the disease, citing a resurgence in some parts of Asia and Europe.
Countries such as China and Italy have seen a recent rise in cases. Infections in India have fallen to their lowest in more than a year, however, with 1,549 new cases reported in the past 24 hours and 31 deaths.
Devastated last year by a wave of Delta infections that saw morgues run out of space and people die in parking lots, India's tally of infections during the pandemic now stands at more than 43 million, with 516,510 deaths.