The product, known as Convidecia Air, delivers the vaccine with a puff of air from a nebulizer, which is then inhaled by mouth. CanSino’s injected Convidecia Covid-19 vaccine is already in use in China and has been approved in several other countries.
The inhalation shot clearance comes as multiple Chinese cities implement massive Covid lockdowns and massive test drives in response to smaller outbreaks.
The country continues to adhere to a strict zero Covid policy even as the rest of the world learns to live with the virus.
Low vaccination coverage among the elderly is one of the medical reasons used by Chinese authorities to justify ongoing disease control measures.
Meanwhile, a new variant of the coronavirus could affect the protection provided by first-generation vaccines around the world, including a Chinese homegrown vaccine that does not offer robust antibody protection compared to Western-developed mRNA vaccines. I am giving
Booster and vaccine campaigns and next-generation product development are underway in China.
The manufacturer does not provide any data to support these claims, but cites research in The Lancet medical journal.
In a small study published in August, CanSino researchers reported that an inhaled vaccine booster increased antibody levels compared to a third CoronaVac injection in people who received two injections of the CoronaVac vaccine. Did.
Developed by Beijing-based Sinovac, which is widely used in China and around the world, Coronavac uses a different type of technology than Combidesia, so inhaled doses provide heterogeneous or combined boosts. did.
The study did not test whether inhaled doses would prevent people from getting infected or transmitting Covid to others.
Globally, drug makers are racing to produce next-generation vaccines that could improve protection against Covid, including those that use innovative methods of administration.
Clinical trials are underway to test more than a dozen spray vaccines to see if they can create so-called mucosal immunity. It enhances specific antibodies in the mouth.
Administered by mouth or nose as drops, sprays, or tablets, these non-shot vaccines are also expected to prevent human-to-human spread. A new variant of the virus.
CanSino’s Convidecia vaccine is similar to Johnson & Johnson and Oxford AstraZeneca vaccines. It uses a harmless virus called adenovirus to make Covid’s spike proteins into your cells so your body can make antibodies against them.
None of CanSino’s products are approved for use in the United States, but the World Health Organization earlier this year listed an injectable version of Conbidesia for emergency use.