India's first intranasal Covid-19 vaccine trials begin in Kanpur

Dr Kushwaha, who administered the vaccine to the volunteers, said, "Two drops of the intranasal vaccine were put into each nostril of a volunteer. After a gap of five minutes two more drops were administered in the same fashion. This way a total of eight vaccine drops was administered to each person. The volunteer was then observed for any reaction for over an hour before being allowed to go home."

Those administered vaccines will now report after 28 days and the same procedure will be repeated.

He also said that prior to the administration of the intranasal vaccine the second time, saliva and blood samples will be collected for studying immunogenicity.

"The intranasal vaccine is dropped into the nostril of a person and it gradually slips into the respiratory tract. The dosage of this vaccine is repeated after 28 days just like Covaxin, which is administered twice in the same time period. The vaccine is designed to neutralise the virus in the nostril itself and prevent it from penetrating deep down into the respiratory tract," he said.

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