Question special
Lead Moderator

As discussed before, "vaccine hesitancy exists in every country where it has been studied". The false causal association between MMR and autism is a classic example of how human tendency to attribution bias and multiple judgement heuristics, can transform temporal association to a causation one, since many symptoms of autism are only apparent shortly after the first year of life. The MMR autism causal association has been thoroughly studied and debunked; Madsen 2002, NEJM paper is one of many studies. Due to the frequency immunizations are given, causal associations will inevitably continue to be proposed to other temporally associated rare events to vaccines. Proving those rare events to be unrelated to vaccination is difficult, time consuming and costly. What are the current mechanisms to supervise and report these events? And how far do you think we should go in allocating resources to study emerging concerns for vaccine safety and association with rare events?