I would add one more thing - this prevented the DS from having time to perfect their vaccine. I suspect the original DS plan was a series of vaccines that set up the world for the real pandemic - creating receptor sites for whatever future flu or disease they were going to unleash on the world. But not the entire world - it would only be setup for the countries they needed to decimate. They would still need their "slaves" and "crops" for harvesting. Of course anyone who survived would be dependent on the DS for medicine and mercy.
I would add one more thing - this prevented the DS from having time to perfect their vaccine. I suspect the original DS plan was a series of vaccines that set up the world for the real pandemic - creating receptor sites for whatever future flu or disease they were going to unleash on the world. But not the entire world - it would only be setup for the countries they needed to decimate. They would still need their "slaves" and "crops" for harvesting. Of course anyone who survived would be dependent on the DS for medicine and mercy.