Vaccine major Bharat Biotech on Wednesday said its COVID-19 vaccine, Covaxin, has demonstrated an interim vaccine efficacy of 81 per cent in the Phase 3 clinical trials.
The trials involved 25,800 subjects, the largest ever conducted in India, in partnership with the Indian Council of Medical Research, the Hyderabad-based company said in a statement.
"Today is an important milestone in vaccine discovery, for science and our fight against coronavirus. With today's results from our Phase 3 clinical trials, we have now reported data on our COVID-19 vaccine from Phase 1, 2, and 3 trials involving around 27,000 participants," Bharat Biotech Chairman and Managing Director Krishna Ella said.
Covaxin demonstrates high clinical efficacy trend against COVID-19 but also significant immunogenicity against the rapidly emerging variants, he added.
Covaxin has been indigenously developed by Bharat Biotech in collaboration with the Indian Council of Medical Research (ICMR).
Covaxin and Oxford-AstraZeneca's Covishield are the two vaccines that are being administered in the country.