Were childhood vaccines properly tested?
Many childhood vaccines were tested with saline placebos. When not, ethical reasons—like protecting kids from disease—guided the use of active controls.
We debunk the latest vaccine misinformation each week in our Just the Facts: Correcting this week’s disinformation newsletter. Browse the other Just the Facts Newsletter Topics by clicking the link below:
Many childhood vaccines were tested with saline placebos. When not, ethical reasons—like protecting kids from disease—guided the use of active controls.
Did the MMR vaccine cause Jenny McCarthy’s son’s autism? We break down the science behind immune system myths, autism, and vaccine safety.
Vaccines protect, not harm. Large studies show vaccinated kids are just as healthy—plus they’re shielded from serious diseases. Here’s what the data say.
Herd immunity protects vulnerable people by limiting disease spread. Learn why vaccines matter—even if they’re not perfect—and what happens when rates drop.
RSV vaccines during pregnancy are safe and protect newborns. Learn how they work, debunked claims about preterm birth, and what the latest studies show.
Thimerosal in flu shots isn’t dangerous—learn how it’s different from toxic mercury, what studies show, and why vaccines are not linked to autism or brain harm.
Despite claims, large studies comparing vaccinated vs. unvaccinated children show vaccines don’t harm kids—and do protect them from serious disease.
There’s no credible evidence linking vaccines to autism—just decades of global research showing they’re safe. Autism’s roots lie in early brain development.
Are childhood vaccines untested and not evidence-based? RFK Jr. says yes—but decades of placebo-controlled trials and expert reviews prove vaccines are safe and effective.
Do vaccines contain RoundUp? A viral video says yes—but flawed testing and basic science say no. There’s no credible evidence glyphosate is in childhood vaccines.