coronavirus vaccine in China, clinical trial registry data showed.An alternative to the common injection in the arm, the spray vaccine can trigger specific immune responses in airways by mimicking the natural infection of a respiratory virus, its researchers have said.A Phase 2 study involving 720 participants, run by a city-level disease control and prevention centre in the eastern province of Jiangsu, will take place from Nov.
17, showed a record in the Chinese Clinical Trail Registry dated Friday.The trial will see the vaccine given at two- or three-week intervals, and will test its safety and ability to elicit immune responses, showed the registry record.The candidate uses a weakened influenza virus to ferry the genetic snippet of the.