Bharat Biotech's nasal vaccine for Covid-19 likely to be a game-changer. Here's why Bharat Biotech's nasal vaccine for Covid-19 likely to be a game-changer. Here's why If approved after clinical trials, the nasal vaccine developed by Bharat Biotech could prove to be a game-changer. Sneha Mordani explains why. advertisement UPDATED: March 5, 2021 01:00 IST Bharat Biotech is set to start phase 1 of clinical trials for its nasal vaccine soon | Representative image from AFP In the summer of the year 2020, the chairman and managing director of India’s premier vaccine developing company, Bharat Biotech International Limited told the reporter that while efforts were on to develop an intramuscular vaccine against Covid-19, what he really would want to do is develop a vaccine that will be easy to administer like ‘polio drops’.