“The World Health Organization Press Office provided this statement, in part, to Verify researchers via email: "The presence of the child at school on the vaccination date may be taken as implied consent if the parents have been informed that the vaccination would take place and given the opportunity to opt-out or take appropriate steps to express their desire to do so." https://www.wusa9.com/article/news/verify/who-school-attendance-not-vaccine-consent/65-d20ac070-9e38-44a9-ac26-e9901217b05d