The newest Covid-19 vaccine candidate to start human testing is the first where volunteers won’t get a painful injection.Instead, they’ll receive a spray through the nose.
China on Wednesday approved phase I human testing for the nasal spray vaccine, which is co-developed by researchers at Xiamen University and Hong Kong University, as well as by vaccine maker Beijing Wantai Biological Pharmacy Enterprise Co.
The intranasal spray has previously been developed as a vaccine for the flu and is recommended for use among children and adults who want to avoid the more common needle injection.While it is not the most frequent choice for delivery, scientists around the world are working to develop sprays as an alternative to muscle jabs for all sorts of vaccines.
Hong Kong University said its vaccine strategy has been selected as one of the five vaccine technologies by the Ministry of Science and Technology for further evaluation.
The nasal spray vaccine uses live attenuated influenza vaccine; the other four technical routes China is using to develop the coronavirus vaccines are inactivated vaccines, adenoviral vector-based vaccines, and DNA and mRNA vaccines.The inactivated vaccine is estimated to be the earliest to be in the market..