Question
Do vaccines cause autism?
What large studies, systematic reviews and current UK/WHO guidance conclude.
Read the evidence →Vaccine Questions
Start with the question. Follow the evidence.
Plain-English routes into the site's main evidence explainers. Each page distinguishes what is established, what remains uncertain and which sources support the conclusion.
Question
What is a Yellow Card report?
How the UK suspected-adverse-reaction system works and why a report is not proof of causation.
Read the evidence →Question
What do Yellow Card numbers mean?
Why a report total is not an incidence rate and which context is needed to interpret it.
Read the evidence →Question
Can vaccines cause side effects?
How common and rare side effects are described, measured and compared with background risk.
Read the evidence →Question
Does “after vaccination” mean “caused by vaccination”?
Why timing matters but cannot establish causation on its own.
Read the evidence →Question
Is the HPV vaccine safe?
Common reactions, investigated safety concerns and the evidence around infertility claims.
Read the evidence →Question
How is vaccine safety monitored?
From clinical trials to post-authorisation surveillance, safety signals and regulatory action.
Read the evidence →Question
Why do vaccine controversies spread?
How uncertainty, mistrust, emotion and information networks can amplify contested claims.
Read the evidence →Question
What is a vaccine safety signal?
Why a signal is a reason to investigate rather than proof that a product caused an event.
Read the evidence →Question
How is vaccine evidence judged?
A practical route through study design, confounding, causation, source quality and uncertainty.
Read the evidence →How we work
Health information needs a higher trust standard.
Articles identify their evidence trail, link to authoritative or primary sources where practical, distinguish association from causation and provide a route for corrections. Core health and safety information remains freely accessible.
Read the editorial standards →