Covid-19: How nasal, one-shot and passive vaccines work

Single-shot, intranasal vaccines will be easy to use, will bring down cost, experts have said.

source https://www.hindustantimes.com/india-news/covid-19-how-nasal-vaccines-one-shot-vaccines-passive-vaccines-work/story-8wO8qawduEHZzMSlApuPSJ.html