然而毫无防护地暴露在可预防的疾病之下则更加危险。举例来说，超过90%的未接种人群接触到麻疹后会引发感染。
The risk of unprotected exposure to vaccine-preventable diseases is far higher: for example, more than 90 percent of unvaccinated people exposed to measles will become infected.
艾尔·维尔已经决定不再给她12岁的女儿接种什么疫苗了，但是她也说，这样做要冒患上接种疫苗就能预防的疾病，如麻疹的风险。
Elwell has decided her 12-year-old daughter will not be get any more vaccines, and she said she was willing to risk a vaccine-preventable disease such as measles.
作为一项预防措施，世界卫生组织和联合儿童基金会正在帮助卫生部和其它卫生合作伙伴开展预防破伤风和麻疹方面的疫苗接种运动。
As a preventive measure WHO and UNICEF are supporting the Ministry of health and other health partners in vaccination campaigns against tetanus and measles.
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