Herd Immunity


Last updated: The concept of herd immunity should not be part of any vaccination decision. Herd immunity is a theory that says that if a certain percentage of the population is fully vaccinated against a disease, the disease cannot spread even among the unvaccinated and will therefore be eradicated. There is no scientific foundation to this idea. It started off with an arbitrary figure of 55% of the population and was incrementally increased over time to the current 95%. These figures are purely arbitrary and were changed whenever the previous percentage proved to be wrong. In one study, outbreaks of measles were found to have occurred even in populations with up to 99.8% vaccination rate. [1] Even just a quick look at the historical charts in this book will show that vaccine-induced herd immunity cannot possibly exist. Otherwise, how could diseases have fallen by 99% before the vaccines were even introduced? Further, as vaccinated people can pass on the disease against which they have been vaccinated, either through “shedding” from a live vaccine or because they became ill despite being vaccinated, it is even more illogical that a certain vaccination coverage could arrest the spread of disease and protect the unvaccinated. And finally, as no vaccine really imparts life-long immunity, any calculation of “vaccine-coverage” as a percentage of the population does not tell us anything about the level of protection. By the time the required coverage thought to produce herd immunity had reached 95% (or similar, depending on the disease and on the source quoted), the whole concept had become meaningless and should have been abandoned there and then. When infectious diseases break out in highly vaccinated populations today, the blame is normally put at the so-called anti-vaccination movement by lazy journalists and vaccine advocates. Proper scientists know, however, that…

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