Is it permissible to marry one’s daughter to an AIDS patient?
Praise be to Allah.
He should not marry his daughter to him unless he has explained his situation and said, “I have such and such a disease.” Then if they agree to that, then that is fine, otherwise the marriage should not proceed, because if he conceals the matter from them he may have cheated them and deceived them, and the woman may pass the disease to her husband, or the husband may pass it to his wife, and to their children after that. But if she accepts you and agrees, and accepts the will and decree of Allaah, then that is OK.
And Allah knows best.
Source: Islam QA