I remember having measles when I was 5 years old, That was more than 60 years ago but I vividly remember the fever, the unbearable itching, the forced isolation, my mother crying because there was so little she could do. Even at that it could have been much worse since, unlike many children, I recovered completely
Anyone who would deliberately subject a small child to that is a monster. Yet that is what the antivaxxers are doing. Most of this originates in the marketing needs of the supplement/quack medicine industry and in the faux contrarianism of commercial media. Antivaxx is rank evil, may its creators and promoters be damned to hell.