Distinction is made between wanted and unwanted immunogenicity: Wanted immunogenicity is typically related with vaccines, where the injection of an antigen (the vaccine) provokes an immune response against the pathogen (virus, bacteria...) aiming at protecting the organism.
Terdapat perbedaan antara imunogenisitas yang diinginkan dan tak diinginkan: Imunogenisitas yang diinginkan biasanya dihasilkan oleh vaksin, ketika penyuntikan suatu antigen (dari vaksin) memicu respons imun terhadap patogen (virus, bakteri) untuk melindungi organisme.