On Wednesday, Bharat Biotech announced that it would be manufacturing around a billion doses of a single-dose intranasal vaccines.
What is an intranasal vaccine & other types of vaccines?
Vaccines are mainly the substances given to one’s body in order to stimulate the production of antibodies and improve the immunity of one’s body.
These vaccines are given to one’s body in many different ways such as:
- Intramuscular- this is the most common way of giving vaccines to a body. In this way, the vaccine is injected into the muscles in the form of shots.
- Subcutaneous- Under this way the vaccine is injected into the tissue just between the skin and the muscles in the form of shots.
- Orally- this is the most common way of giving vaccines to infants or newly borns. In this way, the vaccine is given orally in the form of a liquid solution.
- Intranasal vaccine- Under this way the vaccine is sprayed into the nostrils and inhaled.
Intranasal vaccine & COVID-19
This intranasal Covid-19 vaccine is being developed by the Washington University School of Medicine in St Louis and licensed to Bharat Biotech in India.
This is a single-shot vaccine that aims to overcome the difficulties of mass vaccination as the pandemic is increasing day by day.
Moreover, the intranasal vaccine for COVID-19 will decrease the dependency on several trained personnel who can look after and give the vaccine.
Moreover, experts added that the vaccine will be an easy-to-deliver vaccine against the disease as it is going into a mucosal surface. Such a type of vaccine could also help in building a different kind of immune response.
However, there is very little evidence in support of the effectiveness of this route of delivery so far and, save for some flu vaccines, attempts to deliver vaccines have not been successful, according to experts.
Out of the 187 Covid-19 vaccine candidates listed by WHO only 5 of them are registered to develop an intranasal vaccine.