When does Bharat Biotech plan to mass produce Covaxin?

Bharat Biotech is setting up 4 manufacturing facilities in India to produce 1 billion doses annually of Covaxin. Currently, it is using multiple lines at existing facilities in Hyderabad and Bengaluru to produce Covaxin. The COVID vaccine, Covaxin, demonstrated 77.8% effectiveness against COVID-19 and 65.2% protection against new Delta variant. However, the Covaxin while government approved, is yet to receive decent acceptance globally.