Hyderabad,   Bharat Biotech has been directly supplying its Covid-19 vaccine Covaxin to 18 states since May 1, the company said on Tuesday.

"Unflinching in our efforts, we will continue the steady supply of our vaccine," the Hyderabad-based vaccine maker tweeted.

The states are Andhra Pradesh, Assam, Bihar, Chhattisgarh, Delhi, Gujarat, Haryana, Jammu & Kashmir, Jharkhand, Karnataka, Madhya Pradesh, Maharashtra, Odisha, Tamil Nadu, Tripura, Telangana, Uttar Pradesh and West Bengal.

The company, however, has not come out with details of the supplies like the number of doses supplied to the states.

The company earlier said it started the supplies based on the allocations received by the Government of India.

"Requests have been received from other states, & will be processed for distribution based on availability of stocks 24x7," Bharat Biotech co-founder and Joint Managing Director Suchitra Ella had tweeted earlier.

Bharat Biotech had on April 24 announced pricing for Covaxin. It fixed the price of Covaxin at Rs.600 per dose for state governments.

However, it later slashed the price to Rs.400. This came after Serum Institute of India (SII) cut the price of Covishield to Rs.300 from Rs.400 earlier.

The two vaccine makers slashed the prices after the central government reportedly made a request to them amid the row over different pricing for the central and state governments.

For private hospitals, Bharat Biotech fixed the price at Rs.1,200 per dose. This is twice the cost fixed for Covishield.

For exports, Bharat Biotech has priced India's first indigenous Covid vaccine at $15-$20 (Rs 1,125-1,500).

Ever since the launch of Covid vaccination programme in India, Bharat Biotech and SII have been supplying their vaccines to the Centre at Rs.150 per dose.

While Bharat Biotech is likely to continue the supplies to the Centre at the same price, SII is seeking to revise this to Rs.400.

Both Bharat Biotech and SII have announced that they are reserving 50 per cent of their production capacities for supplies to the central government.