<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What is the reason why vaccines are causing autism?
<|assistant|>
Vaccines are not causally linked to autism. There has been no credible scientific evidence demonstrating a causal relationship between vaccines and autism. It is thought that the belief that vaccines cause autism was sparked by a 1998 papers published in the medical journal The Lancet, which has since been thoroughly debunked and retracted.