sorry you lost me
I have absolutely no idea what you are talking about.
A prophylaxis is “action taken to prevent disease, especially by specified means or against a specified disease” It has nothing to do with the presence or absence of an immune response. If a person has a disease, then by definition (see definition above) it is no longer a prophylaxis but a treatment.
Are you arguing? are you making a new definition of “prophylaxis” that you are trying to sell?
do you have a question?