I believe you may be confusing adenovirus vaccines and vaccines that use adenovisues as vectors. The former protects against adenovirus infection, the later uses an adenovirus as a vector to vaccinate against some other virus.
There is a sort of common adenovirus vaccine [1].
Adenovirus as a vector is new. There is an adenovirus vector Ebola virus that is approved. I think that is the only one. The only others deployed are for COVID under emergency use authorizations. There are several for other diseases in development, but the farthest along are still in clinical trials.
> Adenovirus vaccines are extremely common
I believe you may be confusing adenovirus vaccines and vaccines that use adenovisues as vectors. The former protects against adenovirus infection, the later uses an adenovirus as a vector to vaccinate against some other virus.
There is a sort of common adenovirus vaccine [1].
Adenovirus as a vector is new. There is an adenovirus vector Ebola virus that is approved. I think that is the only one. The only others deployed are for COVID under emergency use authorizations. There are several for other diseases in development, but the farthest along are still in clinical trials.
[1] https://en.wikipedia.org/wiki/Adenovirus_vaccine