Like everyone sane I would much rather than HIV did not exist. Ideally everyone who suffers from it would be given anti retrovirals for free.
A new drug has come out that people can take before sex to reduce their chance of contracting this disease if they copulate with an infected person. It cuts the chance of getting it by 90%.
The trouble is this might make people less likely to use condoms. Therefore it is a mixed blessing. People will be under the misapprehension that it reduces the chance to 0. Many people do not grasp the concept of likelihood. Ironically this medicine may in fact increase infections.