Travel increases the risk for exposure to measles virus and its further spread into susceptible populations if not vaccinated. 旅行会提高麻疹病毒暴露风险,如果未能及时接种,还会进一步传播给易感人群。
Poverty is the main reason why babies are not vaccinated, why clean water and sanitation are not provided, why curative drugs and other treatments are unavailable and why mothers die in childbirth. 为什么婴儿不接种疫苗,为什么没有提供洁净水和卫生设施,为什么得不到治疗药物和其他治疗方法,为什么母亲们死于分娩,贫困是导致这些问题的的主要原因。
As many as20,000 viruses are expelled in an average cough, which may be sufficient to infect many people-particularly those who are not vaccinated. 据统计,每咳嗽一次平均会释放多达2万个病毒,这足以让很多人感染&尤其是那些没有进行预防接种的人。
Some children were not vaccinated because their parents did not know the related knowledge and the vaccination schedule. 未给孩子接种乙肝疫苗主要原因是不知道相关知识和接种程序;
Measles, mumps and whooping cough are spreading again because children are not being vaccinated. 因为孩子们没接种疫苗,麻疹、腮腺炎和百日咳又蔓延开来。