1. That is quite funny...
2. That doesn't include the numbers dying, for example bird flu is second only to aids in "danger"...
3. It doesn't include non disease related (well mostly non related) things such as Cancer and Heart Disease, both of which will have a near 100% fatality rate without treatment. No you can't be vaccinated as such but $1trillion may hugely benefit people with these bigger killers as well. Oh and that's forgetting malaria, which is still one of the biggest killers on the planet, and an illness that can be blamed on anyone as it is completely natural.
Umm... why not?
"oh I better get vaccinated against Tetanus in case I get stabbed"
"oh I better get vaccinated against measles in case I catch it"
...
No, it's more like "oh I better get vaccinated against Tetanus in case I get scratched by a rusty nail or thorn", the number of people catching tetnus from stabbing is probably tiny. In case of "catching it", well that isn't related either.
Aside from the point that this "vaccine" may not even really do anything, and that $1trillion may not effect a cure for anything I am in two minds. One side of me says we need to help these people, but the other part says this world is already overpopulated, mostly due to our medicine and science, which when used in continents like Africa cause huge population explosions, which causes massive issues for the environment and other living things on this planet. AIDS/Malaria/starvation can be seen as pretty natural processes for keeping populations down, whilst also creating natural selection, whereas medicine is doing the opposite, it's keeping people alive, even the unfit, and causing/will cause the human species to stagnate.
The other problem with spending Trillions on vaccines and treatments is that they essentially don't "do" anything. Yes less people are dying at 40, and living until 70, but then they die of Cancer, Heart disease and other more age related diseases or body/mind wasting illnesses (such as Altsheimers), which were very rarely a problem even 70 years ago, but are now becoming the main killers.
Aside from all that it's interesting to see another possible "cure" for HIV, however at the moment it's just another of those news articles that come out multiple times a year that state someone has found a possible cure for cancer, HIV etc, which you then never hear of again after further trials...