The World Health Organization reiterates that there is no link between vaccines and autism.

The World Health Organization released a statement on the 11th saying that the latest analysis report from the organization's Global Vaccine Safety Advisory Committee indicates that there is no causal relationship between vaccines and autism. The Global Vaccine Safety Advisory Committee was established in 1999 to provide independent, authoritative scientific advice to the WHO on key issues related to global vaccine safety. The statement said that this report focuses on the association between thiomersal-containing vaccines and general vaccines with autism. Based on evidence from 31 studies published between January 2010 and August 2025, the report strongly supports the safety of childhood and prenatal vaccination, confirming that there is no causal relationship between vaccines and autism. In addition, the committee evaluated potential health risks related to vaccines containing aluminum adjuvants based on multiple studies from 1999 to March 2023, as well as a large cohort study analyzing the birth registry data of children born in Denmark from 1997 to 2018. The evidence indicates that certain vaccines containing trace amounts of aluminum are not associated with autism, supporting the continued use of vaccines containing aluminum adjuvants. Based on the review results, the committee reaffirmed its existing conclusions in 2002, 2004, and 2012: vaccines including thiomersal and aluminum do not cause autism. The statement also said that global childhood immunization is one of the great achievements in improving health, life, and social well-being. Over the past 50 years, childhood immunization has saved at least 154 million lives.