Recently CNN.co.jp reported the following:
中国、吸入型ワクチンに緊急使用許可 世界初
2022.09.06 Tue posted at 20:45 JST
(CNN) 吸入型の新型コロナウイルスワクチンが世界で初めて、中国で緊急使用許可を得た。開発した中国の製薬会社、カンシノ・バイオロジクス(康希諾生物股分公司)が4日に発表した。
Translation
(CNN) The world's first inhaled new coronavirus vaccine had received emergency use authorization in China. The Chinese pharmaceutical company that developed it, CanSino BIO, announced this on the 4th.
The name of the vaccine was "Combidesia Air", to be inhaled by mouth using an inhaler. China's drug regulator had authorized its emergency use as boosters.
The company's injecting vaccine, “Conbidesia”, was already in use in China and had been approved in several countries.
According to the World Health Organization (WHO) database, about inhaling vaccine in the world, only Combidesia and one other had reached the stage of clinical trials.
CanSino said there were still some regulatory procedures to go through before actual supply would begin. With nine vaccines currently approved in China, the company said it expected "hard competition".
In a press release, CanSino explained that Conbidesia Air induced a strong immune response in bodily fluids and cells through mucous membranes.
The company did not provide supporting data, but in a small
study it reported in August, it found that in the situation of after receiving two
doses of CoronaVac which was a vaccine made by China's Sinovac Biotech Co., if
Combidesia was used as a booster dose, antibody titers were reported to be higher
than those using CoronaVac as a booster. However, the study did not examine the
extent to which inhaled forms could reduce the risk of infection or
transmission among human.
In addition to injectable vaccine and vaccines such as
sprays, dripping, and tablets, vaccines administered directly through the mouth
or nose might easily increase antibodies on the mucous membranes, and were
expected to be effective in preventing the invasion and spread of viruses; a
total of more than ten types were under development around the world.
So, China will be the world’s
first in using inhaled new coronavirus vaccine that is developed by CanSino BIO,
a Chinese pharmaceutical company.
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