Bharat Biotech International Limited (BBIL) on Monday said its Covid-19 intranasal vaccine (BBV154) has proven to be safe, well-tolerated, and immunogenic in subjects in controlled clinical trials phase III.

The vaccine candidate was evaluated earlier in phase I and II clinical trials with successful results. BBV154 has been specifically formulated to allow intranasal delivery. In addition, the nasal delivery system has been designed and developed to be cost-effective in low and middle-income countries, a press release from the vaccine maker said.