Ron Conte,
Thank you so much for clarifying this.
So if I understand correctly, this is what the Pope meant:
In the case of male prostitutes, conception is not possible anyway and there is no sin of contraception in that sense. There is only the sin of sodomy and the sin of endangering the life of the other by possibly infecting him. Thus to realize at least one of the sins (causing infection to the other) is a sign of moral progress in that specific case.
If that is the case, the Pope was spot on I think. I don’t think he intended the media to use it for a case for use of condoms for HIV prevention in Africa. Because, in that specific case you have contraception which can never under any circumstances be morally permissible.
God Bless