I was recently sent the following two links which claim that placebo-control groups were used to license routine childhood vaccines:

• Children's Hospital of Philadelphia - Technically Speaking: 75 Years of Placebo-Controlled Vaccine Testing in the U.S.

• American Academy of Pediatrics - Fact Checked: Childhood Vaccines Are Carefully Studied—Including with Placebos—to Ensure They're Safe and Effective

If you read these two articles, you will notice they contain no actual evidence and no link to any clinical trial. That is because the reality is that not a single routine injected childhood vaccine on the CDC schedule was licensed based on a placebo-controlled trial. Nor, when another vaccine was used as the control, was that vaccine licensed based on a placebo-controlled trial. And so on and so forth down the chain.