No Don, it does not mean that the pool is widening and deepening.
The terms "Gay Plague" and "Black Plague" are not helpful and I would never use them.
Royston is the only person who has.
But, it is true to say, without apportioning any blame, that AIDS is a disease that after 40 years has not significantly affected any group except men who have sex with men, people born in Africa, and a few needle sharers.