目前有四项核心战略，力求在受该疾病影响或据认为再度感染危险性极大的地区阻断野生脊灰病毒传播
There are four core strategies to stop transmission of the wild poliovirus in areas that are affected by the disease or considered at high risk of re-infection
预期结果将是一系列里程碑式的指标，为在剩余的四个疾病流行国家阻断传播，必须实现这些指标。
The expected outcome is a set of milestones that must be met if transmission is to be interrupted in the four remaining endemic countries.
人们认为，一个国家的零病例报告连续达到14个月就属于阻断了疾病传播。
A country reporting zero cases over a period of 14 consecutive months is believed to have interrupted transmission.
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