Herd immunity is a political argument, not a scientific one

It’s called “herd” immunity, and it means that if enough members of a population are vaccinated, everyone will be “protected.” Even though epidemiological studies have proven this theory to be false, this argument is trotted out again and again by political medicine to justify mandatory vaccination programs. No one seems to think, if vaccinations are really immunizations—that is, they produce immunity to the diseases for which they are given—it wouldn’t make any difference whether anyone else was vaccinated or not.

In 1986 outbreak of measles in Corpus Christi, Texas, 99 percent of the children had been vaccinated, and more than 95 percent were purportedly immune. In 1984, 27 cases of measles were reported at a high school in Waltham, Massachusetts, where over 98 percent of the students had documentary proof of vaccination. 1989, an Illinois high school with vaccination records on 99.7 percent of its students reported 69 cases over a three-week period. These reports fail to mention the surprisingly low number of measles cases in unvaccinated students. In 1987, the CDC reported 2,440 cases of measles among vaccinated children.

Study after study points unerringly to clusters of vaccinated children who have contracted measles. But one of the more stark instances of vaccine failure occurred in 1989 in Ohio where 72.5 percent of the 2,720 reported cases of measles occurred in vaccinated persons. That’s  1,972 cases! Eighty percent of these cases occurred in persons 15 years of age and older (when the disease tends to be more serious). … The other vaccinations have high failure rates as well.

— Walene James, Immunization: The Reality Behind the Myth

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