In fact, poor coverage in the world’s richest countries should come as no great surprise, especially when one considers the demographics of those missing out. Where available, evidence suggests that they are mainly girls at the lower end of the socioeconomic spectrum – often members of ethnic minorities with no health-care coverage.
其实，世界上最富国家接种率不尽人意没有什么奇怪，尤其考虑到没有实现接种的人口分布。现有证据表明这些女孩大都处在社会经济底层，往往来自没有医疗保障的少数民族。这意味着风险最高的群体却没有得到保护。