Nasal vaccines for Covid-19: How do they work and what are their benefits?

The Drugs Controller General of India (DCGI), on Tuesday, approved Bharat Biotech's anti-covid vaccine for emergency use. It is the first such vaccine in the country

The Drugs Controller General of India (DCGI) approved Bharat Biotech's Covid-19 nasal vaccine, Incovacc, for emergency use in India on Tuesday. Health minister Mansukh Mandaviya announced the development on Twitter.

With this, India will no longer have to depend only on the intramuscular shots that were hitherto available.

What is a nasal vaccine?

There are several methods of administering a vaccine. The most common is the intramuscular vaccine, where the shot is delivered into the muscle. In subcutaneous vaccines, the shot is delivered between the skin and the muscles.

Vaccines may also be delivered orally, as in the case