I remember last year here in Iligan City, Philippines. The department of education were conducting vaccination to children to all public schools in the city. After few minutes, lots of children were brought to the hospitals in region because they felt so much pain in their stomach. All public hospitals were filled with patients coming from different schools in the region.

In that incident, I believe 2 kids died. There was no clear explanation coming from the department of health. They only said that its a natural reaction of the vaccine.