China approves first nasal spray Covid-19 vaccine for trials

China's only nasal spray vaccine against the coronavirus is expected to start phase I clinical trials in November, and it is recruiting 100 volunteers. It is the only vaccine of its type approved by China's National Medical Products Administration, the state-run Global Times reported. The vaccine is a collaborative mission between Hong Kong and the Chinese mainland that involves researchers from the University of Hong Kong, Xiamen University, and Beijing Wantai Biological Pharmacy.

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