New Delhi, Dec 11 (NationPress) The World Health Organization (WHO) has firmly stated that there is no correlation between vaccines and autism, directly challenging recent assertions made by the US Centers for Disease Control and Prevention (CDC).

After the CDC altered its previous position under President Donald Trump last month, implying that the longstanding consensus on vaccines not causing autism is not “evidence-based,” the WHO conducted a comprehensive analysis.

According to a WHO statement, “The WHO global expert committee on vaccine safety has determined that, based on existing evidence, no causal relationship exists between vaccines and autism spectrum disorders (ASD). This conclusion reinforces the WHO's stance that childhood vaccines do not lead to autism.”

The CDC remarked, “studies have not definitively ruled out the potential that infant vaccines could trigger autism,” suggesting that “evidence supporting a link has been overlooked by health officials.”

In response, the WHO’s Global Advisory Committee on Vaccine Safety (GACVS), created in 1999, reviewed data from 31 primary research studies published between January 2010 and August 2025.

The experts examined the connection between thiomersal-containing vaccines and ASD, as well as the general relationship between vaccines and ASD.

The WHO indicated that “data from numerous nations strongly supports the favorable safety profile of vaccines administered during childhood and pregnancy, confirming the lack of a causal link with ASD.”

The Committee also evaluated potential health risks related to vaccines containing aluminium adjuvants, analyzing studies from 1999 through March 2023.

Additionally, it considered a recent large-scale cohort study examining national registry data of children born in Denmark from 1997 to 2018.

“High-quality evidence indicates no link between trace amounts of aluminium in certain vaccines and ASD, thus supporting the continued use of vaccines with aluminium adjuvants,” stated the UN health body.

“Following its review, GACVS reaffirms its earlier conclusions from 2002, 2004, and 2012: vaccines, including those with thiomersal and/or aluminium, do not cause autism,” the statement concluded.

The WHO has urged national authorities to rely on the latest scientific findings to formulate vaccine policies based on the strongest evidence available.

“Global childhood immunization initiatives stand as one of the most significant achievements in enhancing lives, livelihoods, and societal prosperity. Over the past half-century, childhood immunization has saved at least 154 million lives,” the WHO stated.