Bharat Biotech has announced a scale-up of manufacturing capacity to produce ~ 700 million doses of COVAXIN® annually. Manufacturing scale-up has been carried out in a stepwise manner across multiple facilities at Hyderabad, and Bangalore. Inactivated vaccines, while highly safe, are extremely complex and expensive to manufacture, resulting in lower yields when compared to live virus vaccines.

Capacity expansion in vaccines manufacturing is a long and tedious process, requiring investments of several millions of rupees and several years. Bharat Biotech is able to expand COVAXIN® manufacturing capacity in a short timeline, mainly due to the availability of new specially designed BSL- 3 facilities, first of its kind for manufacturing in India that have been repurposed and preexisting expertise and know-how to manufacture, test and release highly purified inactivated viral vaccines.   

Manufacturing partnerships are being explored with partners in other countries, who have prior expertise with commercial-scale manufacture of inactivated viral vaccines under biosafety containment.    

To further increase capacities, Bharat Biotech has partnered with Indian Immunologicals (IIL) to manufacture the drug substance for COVAXIN®. The technology transfer process is well underway and IIL has the capabilities and expertise to manufacture inactivated viral vaccines at a commercial scale and under biosafety containment.

Bharat Biotech uses a proprietary adjuvant Algel-IMDG, that has now proven to be a safe and effective adjuvant, especially to stimulate memory T cell responses. The synthesis and manufacture of the IMDG component have been successfully indigenized and will be manufactured at a commercial scale within the country. This is the first instance where a novel adjuvant has been commercialised in India.