This graphic illustrates the spread of anti-vax sentiment in the state of California, from the year 2000 to 2013, by looking at the percentage of public kindergarten students who claim the personal exemption against immunization.

这张图通过查看要求个人免疫接种豁免的公立幼儿园学生的百分比，说明了从 2000 年到 2013 年加利福尼亚州反疫苗情绪的蔓延。