How to read database counts: Pharmacovigilance systems (VAERS, EudraVigilance, Yellow Card, VigiBase, Lareb, DAEN) collect spontaneous, unverified reports. A report is not a confirmed adverse event and does not prove the vaccine caused the outcome. Under-reporting, stimulated reporting, and missing denominators limit rate interpretation. Compare with trials and epidemiological studies on each page before drawing conclusions.
Important: Pharmacovigilance databases contain spontaneous reports that are not verified diagnoses of causality. Literature searches return heterogeneous study designs. Coverage data are estimates. Always verify against official national sources before clinical or policy decisions.
Policy Context (Updated August 10, 2026): The August 10, 2026 Executive Order on Gold Standard Childhood Vaccine Recommendations directs enhanced safety monitoring, transparency, and research — including a 90-day HHS Task Force on Safer Childhood Vaccines plan covering continuous risk/benefit evaluation, improved safety monitoring, and alternative adjuvants. These side-by-side VAERS / Canada Vigilance / JADER / EudraVigilance comparisons remain valuable for tracking the multi-system pharmacovigilance evidence base as federal recommendations evolve. See the Policy Updates section for primary-source links.
WHO Immunization Coverage Dashboard
Official WHO/UNICEF estimates of national immunization coverage. Useful for comparing program reach across countries alongside our Schedule Matrix.
If the embed does not load, open immunizationdata.who.int directly.