However, when the actual records are examined, they often abjectly failed to prevent those diseases, and worse still, frequently caused outbreaks and severely injured many of the recipients.

This in part resulted from the inherent toxicity of vaccines and in part because manufacturing challenges regularly resulted in hot lots being released. Rather than address this, the vaccine industry chose to create a variety of strategies to conceal those issues, such as enshrining the dogma "all vaccines are safe" and giving blanket legal immunity to all the "safe" vaccines.

The Toxicity Bell Curve

When humans are exposed to toxins, the reactions to them are distributed such that severe injuries are much rarer. As a result, many of the more subtle, common reactions typically go unrecognized.

Because of this, if a product causes a significant number of deaths (e.g., the COVID mRNA vaccines), that's often the tip of the iceberg and far larger number of injuries lie under the surface (e.g., polling showed that showed 34% of those vaccinated for COVID reported minor side effects and 7% reported significant side effects).

Sudden Infant Deaths

This sadly also holds true for infant deaths, and since its creation, the diphtheria, pertussis, and tetanus (DPT) vaccine has been associated with those deaths.

For example, in 2014, unmarked mass graves belonging to Irish orphans were discovered which belonged to a group of 2,051 children upon whom an early diphtheria vaccine was covertly tested in the 1930s.
Note: early vaccine experiments (including DPT) were conducted in the 1960s to 1970s at Irish care homes, and the test subjects included babies and handicapped children.

Likewise, as detailed by Sir Graham Wilson, in the early 1900s, there were over a dozen cases in the medical literature (and likely far more that weren't documented) where groups of children received an incorrectly prepared diphtheria vaccine, and collectively, thousands became severely ill, with hundreds suffering an agonizing death.

A wave of deaths hence followed DPT's adoption, which like those following the COVID vaccines, became a "mysterious syndrome," initially being called "crib death" and then "Sudden Infant Death Syndrome" (SIDS). In turn, a few doctors saw this and spoke out against it.