In 2020, the Chinese pharmaceutical company CanSino developed an inhaled coronavirus vaccine. The drug Convidecia Air, after the completion of clinical trials, was used to vaccinate residents of China, Mexico, Pakistan, Malaysia and Hungary.

As notes the manufacturer, the vaccine is non-invasive, and a spray is used for inhalation through the mouth. Vaccine Convidecia Air, can effectively induce complex immune protection in response to SARS-CoV-2 after a single breath, reports rambler.ru.