By CNBCTV18.COMNov 10, 2021 7:55:29 PM IST (Updated)
Second-gen COVID-19 vaccines could include oral doses and nasal sprays, and therefore potentially be self-administered. Further, the local immune response of these vaccines would trigger immediate action on the virus before it travels to the lungs.
Second-generation COVID-19 vaccines could offer more benefits over the current crop as they would be easier to deliver than injections, World Health Organization (WHO) Chief Scientist Soumya Swaminathan said.
The second-generation COVID-19 vaccines could potentially be self-administered and include oral forms and nasal sprays.
At present, 129 different candidate vaccines are in the clinical trial phase and being tested on humans. Another 194 candidates are in the laboratories but have not reached the clinical trial stage.