What is Simpsonwood?
A 2000 CDC meeting sparked long-running rumors about vaccine safety. We explain what really happened at Simpsonwood and what science says today.
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:
A 2000 CDC meeting sparked long-running rumors about vaccine safety. We explain what really happened at Simpsonwood and what science says today.
Why are scientists studying aluminum in vaccines? We explain why aluminum is used, what the evidence says about safety, and why research is still ongoing.
Are even one or two vaccines unsafe? This post looks at the science on SIDS, brain development, autism and why spacing out shots doesn’t make them safer.
Do more childhood vaccines mean more autism? This post breaks down the claim and explains why decades of research show the schedule does not cause autism.
Aluminum in vaccines doesn’t build up or harm kids. Studies show it’s safe, quickly leaves the body, and doesn’t cause chronic health problems.
Vaccines don’t spread toxins or cause widespread harm despite claims made in a recent interview. Learn the truth about safety, ingredients, and effectiveness.
Thimerosal, a mercury-based preservative once used in vaccines, contains ethylmercury—not the harmful kind found in fish. Studies show it’s safe, doesn’t cause autism, and hasn’t been in childhood vaccines since 2001.
A closer look at the science behind aluminum in vaccines shows it’s safe, well-studied, and used in tiny amounts that don’t pose health risks to children.
A massive Danish study finds no link between aluminum in vaccines and autism, reinforcing evidence that autism begins before birth, not from shots.
Despite viral claims, delaying or skipping childhood vaccines puts babies at risk. Research shows the schedule is safe, and early vaccination prevents serious illness.