New Delhi, Jan. 10 -- Public health experts believe that intranasal vaccines for coronavirus, administered through nose rather than muscles, can be a potential game changer in India's fight against the coronavirus pandemic.

The nasal vaccine is different from two intramuscular vaccines which recently got approval, as it is non-invasive, needle-free, doesn't require trained healthcare workers, eliminates needle-associated risks, suits children and adults and has scalable manufacturing.

Several studies have proved that the clinical efficacy of intranasal vaccine is superior to that of injectable vaccine. In India, Hyderabad-based Bharat Biotech has sought Drugs Controller General of India's (DCGI) approval to conduct clinical trials of it...