11. Why did Thomas Malthus discourage vaccinations?

He discouraged vaccinations because disease was a natural means of population control.

Thomas Malthus worried that the amount of resources (such as food and water) in the world would not be able to keep up with the increasing number of population in the world.

He believed that diseases are natures'ways of population control to ensure that the resources is enough to accommodate all organisms in the world. Because of this, he believe vaccinations as interference of the natural order.