I am not sure. but I think that he is responsible for any consequences of the mold to your health> You might want to "strong arm him a bit" and tell him that you may have your lawyer contact him, about the fact that he let a dangerous situation go, which may have affected your health, and that you think it may have been a dangerous t, deadly mold (well, it could be, maybe)
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If it is a dangerous mold, I think he may have to close the place, maybe it would be demolished, or have to do extensive renovations.
look this up online, if you can, for it has been a long time since I heard about it.
certain molds are deadly,and he would have to get some testing done. you can tell him you are going to report it, to the proper authorities.
that frightened a landlord of mine once, when i threatened to have the mold tested. he came in right away, and painted over it. probably affected me, but i dont know it yet.
not all black molds are the "dangerous" black mold, but only an expert can tell you that.
good luck, and pox on that landlord!