This is fairly meaningless statement of nonsense.
More interestingly, there are some different common technologies. Off the top of my head:
1) busted up fragments with target surface protein structures.
2) a weakened strain of the target organism
3) a totally different organism genetically modified to contain target surface proteins.
This is critical because #1 doesn't work for shit without 'adjuvants'. This is often aluminum, but other things have been used. The purpose of an adjuvant is to irritate the immune system generally and try to get it to produce more antibodies than it would normally. The trouble is that the immune system will be 'turbo-charged' against whatever it happens to be doing. If it is in the process of cleaning up misbehaving aspects of one's own body (which is one of it's functions) then it can result in a long term autoimmunity problem. At least that is my theory.
live-virus technologies basically create a fairly normal general infection of something fairly benign, but in the process of fighting it off the immune system develops antibodies against the target. Or at least the surface proteins of the target.
When I got my cat vaccinated I specified 'non-adjuvated' vaccines. These were more expensive and I choose a veterinarian specifically because she was the one in my area who carried them. Interestingly, vets seem to be more out-in-front on vaccination issues than do human doctors, but even here it is rare to find a 'professional' who shows any real understanding of the science immunology and potential problems with vaccinating.