

VACCINE SAFETY
THE EVIDENCE BEHIND THE QUESTIONS

The evidence behind vaccine safety — examined, explained, and documented.
Vaccines are among the most closely studied medical interventions, but understanding vaccine safety requires more than being told that vaccines are safe. It requires understanding how we know.
Vaccine Safety Files examines the evidence behind vaccine safety: how vaccines are developed and tested, how potential risks are identified, how safety is monitored after vaccines are introduced, and how scientists determine whether a reported health event was caused by a vaccine or simply happened afterward.
Across the collection, we look closely at the questions that shape public conversations about vaccination — from ingredients, schedules, pregnancy, and adverse events to autism, surveillance systems, changing recommendations, and vaccine policy.
The goal isn't to ask anyone to accept a conclusion on authority. It's to open the file and examine the evidence.
Each episode is accompanied by a full transcript, citations, and direct links to peer-reviewed research, public-health data, and regulatory documents so you can follow the evidence for yourself.
WHAT YOU'LL FIND IN THE FILES
HOW VACCINES ARE TESTED
From preclinical research and clinical trials to the evidence required before authorization or approval.
HOW SAFETY IS MONITORED
The surveillance systems scientists use to detect possible safety signals after vaccination and what happens when a signal appears.
WHAT THE EVIDENCE SHOWS
Close examinations of specific questions and claims about vaccine ingredients, adverse events, pregnancy, autism, schedules, and other safety concerns.
HOW POLICY CHANGES
What happens when recommendations, requirements, or federal vaccine policy changes and how the scientific evidence relates to those decisions.
EXPLORE THE VACCINE SAFETY FILES
Explore episodes examining the science, evidence, surveillance systems, and debates behind some of the most common questions about vaccines.
