Searched: "Epidemic" "Transmission" "Virus" "incubation" "infectious diseases" and other subcategories in these fields.
What I'm looking for- any sort of sickness that can dispersed among the major populations of the world and wipe out most of the people within a short time period. I would prefer it be so deadly that people who contract it in the first round die fast enough not to spread it to people who survive- or at least their remains/ the area would not be too dangerous to survivors.
This is going to be planned event with people who don't mind giving their life for their cause(it's going to be a case of an extremist environmental plot to take out most of humanity). Money and man power are not really a problem- it's a big organization of powerful people.
If I have to have a yet uninvented disease that will do, but I'd rather have something semi-realistic. I was thinking some sort of airborne virus, but diseases are not really my area and I've got no clue where to go besides basic searches that are not coming up with what I'm looking for.
Edit: to correct spelling mistakes made when I posted in such a rush. Sorry!