Major breakthroughs in China's science and technology in 2021
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7. World's first inhaled COVID-19 vaccine unveiled
On Nov 12, the world's first inhaled form of COVID-19 vaccine, known as aerosolized Ad5-nCoV, was unveiled at the fifth Hainan International Health Industry Expo 2021 in South China's Haikou city.
The vaccine was co-developed by CanSino Biologics and researchers from the Institute of Military Medicine under the Academy of Military Sciences. It is inhaled through the mouth into the respiratory tract and lungs to stimulate mucosal immunity that can't be created by intramuscular injections.