All you need to know about world's first nasal vaccine for covid

The government has approved Bharat Biotech's intranasal Covid-19 vaccine, iNCOVACC (BBV154), as a booster dose for those above 18 years of age. How does this needle-free vaccine work and how different is it from the existing ones? To get the answers, Business Standard spoke to Dr Gagandeep Kang, virologist and professor at the Christian Medical College, Vellore. Watch the video for more