HIV is almost the perfect killer to erradicate mankind. Good thing that some of the anti viral drugs hare effective in remission.
[i]Sexually transmitted - People ain't going to stop having sex
Slow to show symptoms[/i] - People will pass it around and not know they have it
Uses your own immune system to kill you - let's anything get you
Viral -hard to kill
Mutates at an alarming rate - difficult to make a vaccine
It's a disease that is spread by sex and wipes out your immune system to let everything else kill you. Savagely brilliant.