Honestly those parents should have charges brought against them for giving raw milk to a child. Even before pasteurization was invented, people knew raw milk was only good for maybe a day or two and would always boil it before consuming. Outside of farming communities, milk was almost not even on most people's radar. They did not carry it in stores, it was not used in cooking, and you had to go to a farm to get some. Besides all that, I am almost certain raw milk is illegal in most countries, it certinally is in the US because it is dangerous and not for human consumption.
It really saddens me seeing stupid parents force their lifestyles on children and causing them direct harm.