One vaccine doesn't even trigger the same immune response in different people, so it is not entirely clear to me what you mean. The basic principle of a vaccin

One vaccine doesn't even trigger the same immune response in different people, so it is not entirely clear to me what you mean. The basic principle of a vaccine is that it contains proteins that are the same as (or similar to) some of the protein building blocks of the actual virus. Your body learns an immune response to these proteins, which it can reactivate when it encounters the real thing. Many potential vaccines target the same spike proteins on the outside of the virus. I guess you could say those produce "the same immune response" in that sense.