I think vaccines started to protect the ruling elite from diseases and keep their industrial workforce healthy. Vaccines weren't based on sound science but rather folk tales. Cleaning up cities and giving industrial workers a living wage, education in hygiene, clean, healthy food and water improved living conditions not vaccines.
Now I think vaccines are used to control population growth and keep people sick for profit through disease management.
The part of this that even a lot of anti-vaxers don't seem to get is that the process of vaccination never worked and is all a giant con.
People here in America are not taught the worlds real history😟