Programs like George Bush's PEPFAR have made great strides in fighting HIV globally through treatment and prevention. Estimated at 25 millions lives saved in 20 years, mostly in Africa.
https://en.m.wikipedia.org/wiki/President%27s_Emergency_Plan...
Unfortunately it's become a target of the right wing culture warriors and certain groups are trying to gut it, after huge strides have been made in reducing global transmission of HIV.