With all other vaccines, families have had the option to opt out at school. None of them were mandatory. It is up to the families and individuals whether or not they want any vaccine. No person should be coerced or mandated to take or inject themselves with any unwanted substance. As for this specific experimental injection, we do not know the long term effects. It would be unethical and unwise to forcibly subject children to anything that we do not understand the full effects of long term. Remember DDT and a multitude of other items were approved by FDA and they were wrong on those too. Gove families the freedom of choice.