Nope. You have to active a full neutralizing antibody based response. Many/most mild infections will be fought off with passive defense measures which wont trig

Nope. You have to active a full neutralizing antibody based response. Many/most mild infections will be fought off with passive defense measures which wont trigger your body to go through all the effort of generating antibodies against the virus. And even if you do gain immunity, that's only against a given antigen, so the virus can mutate or reshuffle its genome (e.g. hiv, influenza) and make permanent immunity difficult.