Bharath Biotech of India, one of the world's largest vaccine manufacturers is already testing a nasal spray vaccine against Covid. https://www.medindia.net/news/bharat-biotech-to-start-trial-on-nasal-covid-19-vaccine-200357-1.htm
Bharath Biotech of India, one of the world's largest vaccine manufacturers is already testing a nasal spray vaccine against Covid. https://www.medindia.net/news/bharat-biotech-to-start-trial-on-nasal-covid-19-vaccine-200357-1.htm
