The WHO Global Expert Committee has reaffirmed that vaccines do not cause autism, following a comprehensive new analysis of global evidence. In its latest review, the Global Advisory Committee on Vaccine Safety (GACVS), an international panel established in 1999 to provide independent scientific guidance on vaccine safety, evaluated data presented on 27 November 2025. The committee examined 31 primary research studies published between 2010 and 2025 from multiple countries, all of which consistently demonstrated that childhood and pregnancy vaccines, including those containing thiomersal, show no causal link to autism spectrum disorders (ASD).
The expert group also reviewed decades of research on vaccines containing aluminum adjuvants, assessing studies from 1999 to March 2023, alongside findings from a recent large Danish cohort of children born between 1997 and 2018. These analyses…
