Nasal spray #Covid-19 vaccine co-developed by Hong Kong scientists approved for emergency use in mainland China in ‘historic breakthrough’ | South China Morning Post
▻https://www.scmp.com/news/hong-kong/health-environment/article/3202179/nasal-spray-covid-19-vaccine-co-developed-hong-kong-scientists-approved-emerge
Yuen said the nasal vaccine would serve as a complement to, but not as a replacement for, conventional vaccination.