A day ahead of pan-India dry-run for Covid-19 vaccine, Union Health and Family Affairs Minister Dr Harsh Vardhan on Friday said that at least two vaccine makers have sent their applications to drug controller and experts for approval and their data is being studied pro-actively.

The Union Health Minister made the remarks while holding a review meeting with the Delhi government for the preparation of the crucial programme, a day before the dry-run of the Covid-19 vaccine.