Bharat Biotech's Covid vaccine Covaxin is expected to get a nod for emergency use listing (EUL) from the World Health Organisation by October. Bharat Biotech had in July submitted all documents required for the EUL of Covaxin to the WHO. Developed by Bharat Biotech in partnership with the National Institute of Virology and the Indian Council of Medical Research, Covaxin was approved for emergency use on January 3. Trial results later showed the vaccine has an efficacy of 78 per cent.