Do childhood vaccines cause autism?
Reliable scientific evidence does not support a causal link between vaccines and autism. A WHO review announced in 2025 reaffirmed this conclusion. Developmental signs may become noticeable around vaccination ages, but timing alone does not establish causation.
Details
How is the evidence assessed?
Large studies and reviews examine risk patterns and alternative explanations, rather than relying on a single story or video. Delaying routine vaccines or changing their schedule to prevent autism has no scientific basis.
Safety does not mean no adverse effects
Injection-site pain or temporary fever can occur, and rare reactions need attention. Clinicians assess specific contraindications, such as a previous severe allergy to a component. Breathing difficulty, facial swelling or collapse after vaccination requires emergency care.
If development concerns you
Seek assessment of communication, language and development, especially when acquired skills are lost. Do not delay support while searching for one cause. Keep vaccination records and discuss symptoms with the paediatrician. Families deserve their concerns to be heard without blame.
Related reading: Is autism inherited or acquired, and what influences development?.