One of the tactics of snake-oil salesmen is to fearmonger about mainstream medical practices so as to scare potential customers into their clutches. A common target of such fearmongering is vaccines. Vaccine are an easy target – they are generally required by the government to some degree, and involve sticking small children with needles and injecting them with a cocktail that parents often don’t understand in detail.
While vaccines are of clear benefit, no one argues that they are risk free. There are rare serious complications. For this reason the US established the NVIC – National Vaccine Injury Compensation program. This is funded by a small tax on each vaccine, and is designed to compensate families of children who have a possible reaction to vaccines, bypassing the slow and costly regular court system. The NVIC works well.
The goal of the NVIC is not to determine scientifically if there is a link between a particular vaccine and a particular side effect. That is determined by the scientific community. Rather, the NVIC’s charge is to determine if “compensation is appropriate” in specific cases. They also give the benefit of the doubt to the families.