Made by Bharat Biotech, iNCOVACC is administered in the form of drops and stimulates an immune response in the tissues that line the nasal cavity.In September 2022, China had approved an inhaled Covid vaccine, administered in the form or a spray.Scientists say that nasal vaccines may offer added immunity in the lining of the nose and upper airways, where Covid typically enters the body.Research teams in the UK and the US have also been investigating nasal spray vaccines.

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