Bill Gates is talking about vaccination in third world countries and probably means convincing the ctizens that its a good thing to cut down having such large families and undergoing voluntary sterilization.
The only problem with his vaccine research is its led him into developing a nano technology vaccine that doesnt need injecting but can be sprayed on the body and be absorbed by body sweat or in hair follicles.
This means it could be given covertly without people knowing and once this technology is out in the open there is nothing to stop governments using it to reduce populations clandestinely.
https://www.naturalnews.com/028887_va...ill_Gates.html